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10.16.2007 at 10:26AM PDT, ID: 22896829
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8.2

javascript dhtml onscroll scrollTop

Asked by jondanger in JavaScript, Hypertext Markup Language (HTML), Dynamic HTML (DHTML)

Tags: , ,

Hi, i've got the following code:

//////////////////////////////////////////////
<html>
<head>
<script language="JavaScript" type="text/javascript">
<!--


function f_filterResults(n_win, n_docel, n_body) {
      var n_result = n_win ? n_win : 0;
      if (n_docel && (!n_result || (n_result > n_docel)))
            n_result = n_docel;
      return n_body && (!n_result || (n_result > n_body)) ? n_body : n_result;
}





function f_clientHeight() {
      return f_filterResults (
            window.innerHeight ? window.innerHeight : 0,
            document.documentElement ? document.documentElement.clientHeight : 0,
            document.body ? document.body.clientHeight : 0
      );
}      
      

function f_clientWidth() {
      return f_filterResults (
            window.innerWidth ? window.innerWidth : 0,
            document.documentElement ? document.documentElement.clientWidth : 0,
            document.body ? document.body.clientWidth : 0
      );
}


function SetDivWidth(){
      var mydiv = document.getElementById("maincontainer");

      var curr_width = mydiv.style.width;
// now add 10 to the width
      mydiv.style.width = f_clientWidth() -16;

        var myimginscroller = document.getElementById("imgscroller");

        myimginscroller.height = (f_clientHeight() * 4);
      
}


function zztt(){
document.getElementById("maincontainer").innerHTML = document.getElementById("scroller").scrollTop
}


-->
</script>
</head>


<body topmargin="0" leftmargin="0" rightmargin="0" bottommargin="0" onload="SetDivWidth()" onresize="SetDivWidth()">
<div id="scroller" onscroll="zztt();" style="padding: 0px; background-color: rgb(41, 41, 41); color: white; position: absolute; right: 0px; top: 0px; width: 16px; height: 100%; overflow-y: scroll;">
<img id="imgscroller" src="a.bmp" height="10" width=10">
</div>

<div id="maincontainer" style="padding: 0px; position: absolute; right: 16px; top: 0px; background-color: orange; width: 100%; height: 100%;">
</div>
</body>
</html>
///////////////////////////////////////////////////////////

how can i make the updated value in the orange div (maincontainer) a percentage? (ie 0% if the scrollbar's at the top, and 100% if it's at the bottom).
My codes not working on the body height, it's working on the window height which i assume are different, i've been playing for the last couple of hours but am sure someone out there could solve this in 60 seconds!

any help much appreciated,
JonStart Free Trial
[+][-]10.16.2007 at 02:49PM PDT, ID: 20089360

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About this solution

Zones: JavaScript, Hypertext Markup Language (HTML), Dynamic HTML (DHTML)
Tags: javascript, scrolltop, onscroll
Sign Up Now!
Solution Provided By: frindo
Participating Experts: 1
Solution Grade: A
 
 
 
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20080716-EE-VQP-32 / EE_QW_1_20070628