function iepng(imgObj){
	if(ismsie6x()){
		imgObj.onload=null;
		imgObj.style.filter="progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+ imgObj.src+ "',sizingMethod='scale')";
		imgObj.src='void.gif';
	}
}

function iepngbg(objId,png,mthd){
	if(ismsie6x()){
		if(document.getElementById(''+ objId)){
			var obj=document.getElementById(''+ objId);
			var mthd=(mthd)?mthd:"image";
			obj.style.backgroundImage='none';
			obj.style.filter="progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+ png+ "',sizingMethod='"+ mthd+ "')";
		}
	}
}

function ismsie6x(){
	var result=false;
	var useragent=navigator.userAgent;
	var platform=navigator.platform;
	if(useragent.indexOf('MSIE')>=0 && platform.indexOf('Win')>=0 && !window.opera){
		var re=/MSIE ([0-9]+)\./;
		var version=useragent.match(re)[1];
		if(parseInt(version)>=6) result=true;
	}
	return result;
}