var isIE6 = (navigator.userAgent.indexOf('MSIE 6')!=-1);
if (isIE6) document.onreadystatechange = readyStateChange;

function readyStateChange(){
   if (document.readyState=="interactive" || document.readyState=="complete"){
      fixPngs();
      document.onreadystatechange = null;
   }
}

function fixPngs(){

	var allImgTags = document.getElementsByTagName('img');
	var currentImgTag;

	for (var i=0; i<allImgTags.length; i++){
		currentImgTag = allImgTags[i];
		if ( currentImgTag.src.indexOf('.png')!=-1){
			currentImgTag.style.cssText = "filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+currentImgTag.src+"')"
			currentImgTag.src = "/img/spacer.gif";
		}
	}
	
}