ciao a tutti!

ho trovato su internet uno script perfetto per me, l ho gia implementato e é fatastico. unico problema é che devo impostare la larghezza in px. vorrei poterla mettere in percentuale. si tratta di un "box" con all interno un testo che scrolla. qualcuno sa dirmi come riadattarlo? ecco a voi lo script:

codice:
<html>
<head>
<title></title>

<style type="text/css">
A { text-decoration:none;}
A:link	{color:blue;}
A:visited{color: blue;}
A:hover	{color: red;background-color:#66ffff;}
 .tab {font-size:12px;font-family:Arial,Helvetica;color:navy;}
 .tabb {font-size:12px; font-family:Arial,Helvetica;}
</style>

<head>

<SCRIPT LANGUAGE="JavaScript">
//-- Begin Scroller's Parameters and message -->
//scroller width: change to your own;
var wwidth=300;

//scroller height: change to your own;
var wheight=20;

//background color: change to your own; 
var wbcolor="#ccffcc";

//scroller's speed: change to your own;
var sspeed=2;
var restart=sspeed;
var rspeed=sspeed;

//text: change to your own

wwholemessage='<nobr class=tab>Javascript Horizontal Text Scroller v2.2 => '+
'<a class=tabb href="http://javascripts.vbarsan.com">'+
'Javascript Vertical Scroller 7.0 + Javascript Horizontal Scroller 7.0 + Javascript Typewriter Scroller 5.0</a> <= Javascript Horizontal Text Scroller v2.2</nobr>';

//-- end Parameters and message-->

//-- begin: Scroller's Algorithm -->
var sizeupw=0;var operbr=navigator.userAgent.toLowerCase().indexOf('opera');if(operbr==-1&&navigator.product&&navigator.product=="Gecko"){var agt = navigator.userAgent.toLowerCase();var rvStart = agt.indexOf('rv:');var rvEnd = agt.indexOf(')', rvStart);var check15 = agt.substring(rvStart+3, rvEnd);if(parseFloat(check15)>=1.8) operbr=0;}if (navigator.appVersion.indexOf("Mac")!=-1)operbr=0;
function goup(){if(sspeed!=rspeed*8){sspeed=sspeed*2;restart=sspeed;}}
function godown(){if(sspeed>rspeed){sspeed=sspeed/2;restart=sspeed;}}
function startw(){if(document.getElementById)ns6marqueew(document.getElementById('wslider'));else if(document.all) iemarqueew(wslider);else if(document.layers)ns4marqueew(document.wslider1.document.wslider2);}function iemarqueew(whichdiv){iedivw=eval(whichdiv);iedivw.style.pixelLeft=wwidth+"px";iedivw.innerHTML='<nobr>'+wwholemessage+'</nobr>';sizeupw=iedivw.offsetWidth;ieslidew();}function ieslidew(){if(iedivw.style.pixelLeft>=sizeupw*(-1)){iedivw.style.pixelLeft-=sspeed+"px";setTimeout("ieslidew()",100);}else{iedivw.style.pixelLeft=wwidth+"px";ieslidew();}}function ns4marqueew(whichlayer){ns4layerw=eval(whichlayer);ns4layerw.left=wwidth;ns4layerw.document.write('<nobr>'+wwholemessage+'</nobr>');ns4layerw.document.close();sizeupw=ns4layerw.document.width;ns4slidew();}function ns4slidew(){if(ns4layerw.left>=sizeupw*(-1)){ns4layerw.left-=sspeed;setTimeout("ns4slidew()",100);}else{ns4layerw.left=wwidth;ns4slidew();}}function ns6marqueew(whichdiv){ns6divw=eval(whichdiv);ns6divw.style.left=wwidth+"px";ns6divw.innerHTML='<nobr>'+wwholemessage+'</nobr>';sizeupw=ns6divw.offsetWidth;if(operbr!=-1){document.getElementById('operaslider').innerHTML='<nobr>'+wwholemessage+'</nobr>';sizeupw=document.getElementById('operaslider').offsetWidth;}ns6slidew();}function ns6slidew(){if(parseInt(ns6divw.style.left)>=sizeupw*(-1)){ns6divw.style.left=parseInt(ns6divw.style.left)-sspeed+"px";setTimeout("ns6slidew()",100);}else{ns6divw.style.left=wwidth+"px";ns6slidew();}}
//-- end Algorithm -->
</script>
</head>



<body onload="startw();">



<script language="JavaScript">document.write('<table align="center" border="2"><tr><td width='+wwidth+'px>');if(document.getElementById || document.all){document.write('<span style="width:'+wwidth+'px;"><div style="position:relative;overflow:hidden;width:'+wwidth+'px;height:'+wheight+'px;clip:rect(0 '+wwidth+'px '+wheight+'px 0);background-color:'+wbcolor+';" onMouseover="sspeed=0;" onMouseout="sspeed=restart">');if(operbr!=-1)document.write('<div id="operaslider" style="position:absolute;visibility:hidden;"></div>');document.write('<div id="wslider" style="position:absolute;height:'+wheight+'px;"></div></div></span>')}</script>
<ilayer width=&{wwidth}; height=&{wheight}; name="wslider1" bgcolor=&{wbcolor};><layer name="wslider2" width=&{wwidth}; height=&{wheight}; onMouseover="sspeed=0;" onMouseout="sspeed=restart"></layer></ilayer></td></tr></table>


</body></html>