function external() {
	if (!document.getElementsByTagName) return;
	var anchors = document.getElementsByTagName("a");
	for (var i=0; i<anchors.length; i++) {
		var anchor = anchors[i];
		if (anchor.getAttribute("href") &&
			anchor.getAttribute("rel") == "external")
		anchor.target = "_blank";
	}
}

function fixpng(){
	var arVersion = navigator.appVersion.split("MSIE")
	var version = parseFloat(arVersion[1])
	if ((version >= 5.5) && (document.body.filters)) {
		var l = document.getElementsByTagName('img');
		for(i=0;i<l.length;i++){
			p = '/gif/gif.gif';
			n = l[i].getAttribute('src');
			g = n.toLowerCase();
			if(g.substring(g.length-3)=="png"){
				l[i].setAttribute('src',p);
				l[i].style.cssText="filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+n+"')";
			}
		}
	}
}

window.onload = external; fixpng;