function imgSwap(oImg)
{
   var strOver  = "_on"    // image to be used with mouse over
   var strOff = "_off"     // normal image
   var strImg = oImg.src
   if (strImg.indexOf(strOver) != -1) 
      oImg.src = strImg.replace(strOver,strOff)
   else
      oImg.src = strImg.replace(strOff,strOver)
}



var clear="images/clear.gif" //path to clear.gif

pngfix=function()
{var els=document.getElementsByTagName('*');
var ip=/\.png/i;
var i=els.length;
while(i-- >0){var el=els[i];
var es=el.style;
if(el.src&&el.src.match(ip)&&!es.filter){es.height=el.height;es.width=el.width;
es.filter="progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+el.src+"',sizingMethod='crop')";
el.src=clear;}else{var elb=el.currentStyle.backgroundImage;
if(elb.match(ip)){var path=elb.split('"');
var rep=(el.currentStyle.backgroundRepeat=='no-repeat')?'crop':'scale';
es.filter="progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+path[1]+"',sizingMethod='"+rep+"')";
es.height=el.clientHeight+'px';es.backgroundImage='none';
var elkids=el.getElementsByTagName('*');
if (elkids){var j=elkids.length;if(el.currentStyle.position!="absolute")es.position='static';
while (j-- >0)if(!elkids[j].style.position)elkids[j].style.position="relative";}}}}}
window.attachEvent('onload',pngfix);