// function from
// http://www.onlinetools.org/articles/unobtrusivejavascript/chapter4.html
function addEvent(obj, evType, fn){
	if (obj.addEventListener){
		obj.addEventListener(evType, fn, true);
		return true;
	}
	else if (obj.attachEvent){
		var r = obj.attachEvent("on"+evType, fn);
		return r;
	}
	else {
		return false;
	}
}


function replaceWxPng() {
	var wximg = document.getElementById("wx-img");
	var src = wximg.src;
	wximg.style.visibility = "hidden";
	var div = document.createElement("DIV");
	div.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + src + "', sizing='scale')";
	div.style.width = "148px";
	div.style.height = "62px";
	img.replaceNode(div);
}

// addEvent(window,'load',replaceWxPng);