// File name : dhtmleditorfuncitons.js
// Usage : used for blink, type writer font and countdown functionality

  var x=1; //Global variable used to display each character index in type writer font.
  var txtvar="" // Global variable used to store the text as a whole for all words selected for type writer font.
  var j=0; //Global variable used to track the number of words for type writer font.
  var text_type; //GLobal variable to store the word selected for Type writer font.
  var arrlen=new Array(); //Global variable to store the total number of characters for type writer font.
  var IsSound=false; // Global variable checks whether users has selected sound on or off.
  var delaytimer; //GLobal variable to on/off the delay time.
  var delayInSeconds=0; // Global variable used to set the delay time to start the type writer font.
  var timerval=0; // GLoabal variable used to set the time interval for type writer font between every two characters.
  var iDiv = 0; // Global variable used to give the unique name to every division tag.
  var CountDownVal=10; // Global variable used to store the start countdown value.
  var winstatus; // Global variable used to store the value for window status like hidden/visible
  var checkInstallMsg=false  

//  function used to write every character of the passed word as argument selected for type writer font  in the form of division tag
//  Parameter : txt -> word for ttf
//  Parameter : isImage -> whether selected is Image in ttf

function writetext(txt,IsImage)
{
    try
    {
        j++;
        // if user has not selected any image in the ttf tag 
        if (IsImage==undefined)
        {
            txt=replaceSubstring(txt,">",">");
            txt=replaceSubstring(txt,"&lt;","<");
            txt=replaceSubstring(txt,"&amp;","&");
            div_text=txt;
            txt=replaceSubstring(txt," ","z");
            txt=replaceSubstring(txt,";","a");
            txt=replaceSubstring(txt,".","p");
            txt=replaceSubstring(txt,"?","q");
            txt=replaceSubstring(txt,"'","o");
            txt=replaceSubstring(txt,'"',"d");
            txt='x'+txt;
            // i -> counter to count the number of chars in txt variable
            for(var i=1; i<=txt.length; i++)
            {
                document.write('<span id="' + j + txt + i + '" style="visibility:hidden;">');
                document.write(div_text.charAt(i-1) + '</span>');
            }
            txtvar=txtvar+txt;
            arrlen[arrlen.length]=txt.length;
        }
        else
        {
            // for image in ttf tag
            document.write('<span id="'+ j + "g1" + '" style="visibility:hidden;">');
            document.write(txt + '</span>');
            txtvar=txtvar+"g";
            arrlen[arrlen.length]=1;
        }
    }    
    catch(e){}
}

//  function is called from HTML file for type writer font style.
//  Parameter : txt -> word for ttf
//  Parameter : isSound -> whether user has selected to run sound

function type(txt,isSound)
{
    try
    {
        if(isSound!=undefined)
            IsSound=isSound;
        if (txt.indexOf("<~~>")>-1)    
        {
            txt=replaceScriptTags(txt);
        }
        // str -> to store the complete string
        // leftstr -> to store the complete left string
        // rightstr -> to store the complete right string
        // len -> to store the complete string length
        var str="",leftstr="";rightstr="",len=0;
        text_type=replaceSubstring(txt,"&nbsp;"," ");
        if(text_type.indexOf("<")>-1)
        {
            // loop to extract tags on left and right side of the words selected for ttf tags

            for(len=0;len<text_type.length;)
            {
                // loop to track starting of the html tag
                while(text_type.charAt(len)!='<' && len<text_type.length)
                {
                    str=str+text_type.charAt(len);
                    len++;
                }
                if (str!="") {writetext(str);str="";}
                if(text_type.charAt(len+1)=='/' && len<text_type.length)
                {
                    // loop to track end  of the html tag
                    while(text_type.charAt(len)!='>' && len<text_type.length)
                    {
                        rightstr=rightstr+text_type.charAt(len);
                        len++;
                    }
                    rightstr=rightstr+text_type.charAt(len);
                    document.write(rightstr);
                    rightstr="";
                }
                else
                {
                    while(text_type.charAt(len)!='>' && len<text_type.length)
                    {
                        leftstr=leftstr+text_type.charAt(len);
                        len++;
                    }
                    leftstr=leftstr+text_type.charAt(len);
                    if (leftstr.substring(0,4).toLowerCase()=="<img" || leftstr.substring(0,6).toLowerCase()=="<input" || leftstr.substring(0,5).toLowerCase()=="<text")
                        writetext(leftstr,true)
                    else    
                        document.write(leftstr);
                    leftstr="";
                }
                len++;
            }
        }
        else
        {
            // if word is selected by user without any formatting tag
            writetext(text_type);
        }
    }    
    catch(e){}
}

// function sets the delay time and is called from HTML file with seconds for delay
// Parameter : delaySeconds -> seconds for delay

function setDelayTime(delaySeconds)
{
    try
    {
        if(delaySeconds!=undefined)
            delayInSeconds=delaySeconds;
    }catch(e){}
}

// function calls at the end of HTML file to start displaying of type writer font chars.

function runtimer()
{
    try
    {
        // if user has selected sound play 
        if(IsSound)
        {
            // write tags as per browser types

            if(navigator.appName == "Microsoft Internet Explorer" && (navigator.userAgent.toLowerCase().indexOf('opera')==-1))
            {
                document.write('<BGSOUND id="TTFBGSOUND_ID">');
            }
            else
            {
                // check if any plugin is installed
                if (navigator.plugins) 
                {
                        for (i=0; i < navigator.plugins.length; i++ )
                    {
                        // check if quicktime plugin is installed
                            if (navigator.plugins[i].name.indexOf("QuickTime") >= 0)
                        {    
                            // This is used for the firefox sound
                            document.write('<embed src="hoveradFirefoxsound.swf" width="0" height="0" autostart=false hidden="true" id="Hsound" enablejavascript="true">');                
                            break;
                        }
                    }
                    if(i==navigator.plugins.length)
                    {
                        if(checkInstallMsg==false)
                        {
                            checkInstallMsg=true;
                            var ans; // to store the user ok or cancel actions
                            ans=confirm("Please Install QuickTime Plug-in to run sound");    
                            if(ans==true)
                            {
                                window.parent.location.href="http://www.apple.com/quicktime/download/";
                                return;
                            }
                        }
                    }
                    }
                else
                {
                        if(checkInstallMsg==false)
                        {
                            checkInstallMsg=true;                                
                            var ans;// to store the user ok or cancel actions
                            ans=confirm("Please Install QuickTime Plug-in to run sound");    
                            if(ans==true)
                            {
                                window.parent.location.href="http://www.apple.com/quicktime/download/";
                                return;
                            }
                        }
                }
            }
        }
        if(delayInSeconds>0)
        {    
            var ds=(delayInSeconds*1000);
            delaytimer=setTimeout("runTTF()",ds);
        }
        else
            runTTF();
    }
    catch(e){}
}

// function is called after delayseconds are over for type writer font to start displaying the type writer font chars

function runTTF()
{
    try
    {        
        if (delaytimer!=undefined) clearTimeout(delaytimer);
        if(j!=0)
        {    
            startpos=0;
            // loop run for the complete words arrays and display each word char by char in ttf funcitonality
            for(var i=0;i<arrlen.length;i++)
            {
                text_type=txtvar.substring(startpos,arrlen[i]+startpos);
                j=i+1;
                for(m=1;m<=arrlen[i];m++)
                {
                    x=m;
                    // actually shows the division contains the character
                    dotype();
                }
                timerval=400*x+(timerval);
                startpos=startpos+arrlen[i];
            }
        }
        j=0;
    }
    catch(e){}
}

// function is called from runTTF function for showing each character in type writer font 

function dotype()
{
    try
    {
        setTimeout("Show('"+j+text_type+x+"')",400*x+(timerval));
    }
    catch(e){}
}

// function to set the window status hidden when sound status is stop.
// parameter : soundobj2 -> id of embed tag

function stopsound_ttf(soundobj2)
{
    winstatus="hidden"
}

// function to play the sound.
// parameter : soundobj2 -> id of embed tag

function playsound_ttf(soundobj2)
{
    try
    {
        // play sound if window is visible 
        if(winstatus != "hidden")
        { 
            if(navigator.appName == "Microsoft Internet Explorer" && (navigator.userAgent.toLowerCase().indexOf('opera')==-1))
            {
                if(!window.closed) 
                {
                    document.all['TTFBGSOUND_ID'].src="hoveradFirefoxsound.swf" ;
                }
            }
            else
            {
                var thissound=document.getElementById('Hsound');
                if(!window.closed) 
                {
                    thissound.Play();
                }
                else
                {
                    thissound.stop();        
                }
                thissound=null;
            }
        }
    }
    catch(e){}            
}

// function to show the type writer font characters along with sound .
// parameter : layername -> embed src tag id 

function Show(layerName)
{
    try
    {
        eval('this.document.getElementById'+'("'+layerName+'")'+'.style.visibility="visible"');
        if(eval('this.document.getElementById'+'("'+layerName+'")'+'.innerHTML')!="" && eval('this.document.getElementById'+'("'+layerName+'")'+'.innerHTML')!=" " && IsSound) playsound_ttf('sound2')
        if(x<text_type.length)
        {
          x++;
          dotype();
        }
     }
    catch(e){}
}

// function to replace the a substring with another substring from the string
// parameter : inputstring -> source string 
// parameter : fromString -> substring to be replaced
// parameter : inputstring -> substring to be replaced with

function replaceSubstring(inputString, fromString, toString) 
{
    var temp = inputString;
    if (toString.indexOf(fromString) == -1) 
    {
        while (temp.indexOf(fromString) != -1) 
        {
            var toTheLeft = temp.substring(0, temp.indexOf(fromString));
            var toTheRight = temp.substring(temp.indexOf(fromString)+fromString.length, temp.length);
            temp = toTheLeft + toString + toTheRight;
        }
   }
   else 
   {
        var midStrings = new Array("~", "`", "_", "^", "#");
        var midStringLen = 1;
        var midString = "";
        while (midString == "") {
        for (var i=0; i < midStrings.length; i++) 
        {
            var tempMidString = "";
            for (var j=0; j < midStringLen; j++) 
            {
                 tempMidString += midStrings[i]; 
            }
            if (fromString.indexOf(tempMidString) == -1) 
            {
               midString = tempMidString;
               i = midStrings.length + 1;
            }
         }
     }
     while (temp.indexOf(fromString) != -1) 
     {
         var toTheLeft = temp.substring(0, temp.indexOf(fromString));
         var toTheRight = temp.substring(temp.indexOf(fromString)+fromString.length, temp.length);
         temp = toTheLeft + midString + toTheRight;
     }
     while (temp.indexOf(midString) != -1) 
     {
         var toTheLeft = temp.substring(0, temp.indexOf(midString));
         var toTheRight = temp.substring(temp.indexOf(midString)+midString.length, temp.length);
         temp = toTheLeft + toString + toTheRight;
     }
   } 
 return temp; 
}

// function to toggle the display status in Blink functionality on/off
// parameter : sID -> division id 

function Toggle(sID)
{
    try
    {
        var obItem;
        obItem = document.getElementById(sID);
        // if the object is hidden then it will be visible and vice versa
        if(obItem.style.visibility=='hidden')
        {
            obItem.style.visibility='visible';
        }
        else
        {
            obItem.style.visibility='hidden';
        }
        setTimeout("Toggle('" + sID + "')", 1000);
    }
    catch(e){}
}

// function to replace the special type of tags present in script 
// parameter : scriptText -> argument passed in the function from HTML file. 

function replaceScriptTags(scriptText)
{
        try
        {
            // checks for existing of the tags and replace them with the appropriate functions
            if (scriptText.indexOf("<~>displaydate()<~~>")>=0)
            {
                scriptText=replaceSubstring(scriptText,"<~>displaydate()<~~>",retdisplaydate());
            }
            if (scriptText.indexOf("<~>countBlink()<~~>")>=0)
            {
                document.write(scriptText.substring(0,scriptText.indexOf("<~>countBlink()<~~>")));
                countBlink();
                document.write(scriptText.substring(scriptText.indexOf("<~>countBlink()<~~>")+19));
                scriptText="";
            }
            if (scriptText.indexOf("<~>displayaddday()<~~>")>=0)
            {
                scriptText=replaceSubstring(scriptText,"<~>displayaddday()<~~>",retdisplayaddday());
            }
            if (scriptText.indexOf("<~>displayaddday(")>-1)
            {
                startp=0
                startp=scriptText.indexOf("<~>displayaddday(")+17
                no="";
                while(scriptText.charAt(startp)!=")")
                {
                    no=no+scriptText.charAt(startp)
                    startp=startp+1
                }
                scriptText=replaceSubstring(scriptText,"<~>displayaddday("+no+")<~~>",retdisplayaddday(parseInt(no)))
            }
            return scriptText;
        }
        catch(e)
        {}
}

// function to remove the span tags if exists in the argument of Blink fucntion 
// parameter : txt -> argument checked for existance of span tags

function removeSpanTag(txt)
{
    if (txt.indexOf('<SPAN')>txt.indexOf('</SPAN'))
        txt=txt.substring(0,txt.indexOf('</SPAN>')-1)+txt.substring(txt.indexOf('</SPAN>')+7)
    return txt;
}

// fucntion to Blink the text called from HTML file
// parameter : sText -> text to be blinked

function Blink(sText)
{
    try
    {
        sText=replaceScriptTags(sText);
        l=0;g=0;
        // loop to check for opening and closing tags around words to be blinked
        for(i=0;i<sText.length;i++)
        {
            if(sText.charAt(i)=="<") 
                l++;
            else 
                if(sText.charAt(i)==">") g++;
        }
        if ((l-g)==1) 
            sText=sText + ">"
        else
            if ((l-g)==-1) 
                sText="<" + sText  
        sText=removeSpanTag(sText);
        if(navigator.userAgent.toLowerCase().indexOf('opera')!=-1)
        {
//            for other than motion
            if (sText.indexOf("</o:p>")!=-1 || sText.indexOf("</P>")!=-1 || sText.indexOf("</H")!=-1)
            {
                document.write("<div id='blk" + iDiv + "'>" + sText + "</div>");
            }
            else
            {
                document.write("<span id='blk" + iDiv + "'>" + sText + "</span>");                
            }
            iDiv++;
        }
        else if(navigator.appName == "Netscape")
        {
            document.write("<blink>" + sText + "</blink>");
        }
        else if(navigator.appName == "Microsoft Internet Explorer")
        {
            document.write("<span id='blk" + iDiv + "'>" + sText + "</span>");
            iDiv++;
        }
        else
        {
            document.write(sText);
        }
    }
    catch(e){}
}

// Function called at the end of Html file to start blinking of text

function runBlink()
{
    if(delayInSeconds>0)
    {    
        var ds=(delayInSeconds*1000);
        delaytimer=setTimeout("setBlink()",ds);
    }
    else
        setBlink();
}

// Function called from runBlink function to show blinking.

function setBlink()
{
    if (delaytimer!=undefined) clearTimeout(delaytimer);
    if(navigator.appName != "Netscape")
    {
        for(i=0;i<iDiv;i++)        
            Toggle("blk" + i);
    }    

} 

// Function to return current date

function retdisplaydate()
{
    try
    {
        var currdt=new Date();
        return ((currdt.getMonth()+1)+"/"+currdt.getDate()+"/"+currdt.getFullYear())
    }    
    catch(e){}
}

// Function to display current date

function displaydate()
{
    try
    {
        var currdt=new Date();
        document.write ((currdt.getMonth()+1)+"/"+currdt.getDate()+"/"+currdt.getFullYear())
    }    
    catch(e){}
}

// Function to display current date with number of days added to current date
// parameter : daysToAdd -> number of days added to current date

function displayaddday(daysToAdd)
{
    try
    {
        if(daysToAdd == undefined) 
            daysToAdd=0;
        var currDt=new Date();
        currDt.setDate(currDt.getDate()+parseInt(daysToAdd));
        document.write((currDt.getMonth()+1)+"/"+currDt.getDate()+"/"+currDt.getFullYear());
    }
    catch(e){}
}

// Function to return current date with number of days added to current date
// parameter : daysToAdd -> number of days added to current date

function retdisplayaddday(daysToAdd)
{
    try
    {
        if(daysToAdd == undefined) 
            daysToAdd=0;
        var currDt=new Date();
        currDt.setDate(currDt.getDate()+parseInt(daysToAdd));
        return((currDt.getMonth()+1)+"/"+currDt.getDate()+"/"+currDt.getFullYear());
    }
    catch(e){}
}

// function to start the countdown timer  called from countBlink function
// parameter : displaytime -> time taken before dispalying countdown timer

function CountToggle(displaytime)
{
    try
    {
        // close the window if count down comes to zero 
        if (CountDownVal==0)
        {
            closeAd();
            return;
        }
        else
            document.getElementById("countDown").innerHTML  =CountDownVal--;
        setTimeout("CountToggle()", 1000);
    }
    catch(e){}
}


// function to display the countdown timer 
// parameter : displaytime -> time taken before dispalying countdown timer


function countBlink(displaytime)
{
    CountDownVal=(displaytime+1)
    try
    {
        document.getElementById("countDown").innerHTML  =CountDownVal--;
//        document.write("<span name='countDown' id='countDown'>" + CountDownVal + "</span>");
        CountToggle(displaytime);
    }
    catch(e){}
}

function countBlink1(time,sec)
{
    setTimeout("countBlink(" + time + ")",(sec * 1000));
}