var topimgs = new Array();
var preloadImg = function(e){
	for(var i=1;i<=4;i++){
		var img = document.createElement("IMG");
		img.src = "/images/a"+i.toString()+"2.jpg";
		topimgs.push(img);
	}
}
preloadImg();

var linkMouseAction = function(from,action){
	if(action == "over"){
		from.childNodes[0].src = from.getAttribute("overimg");
	}else{
		from.childNodes[0].src = from.getAttribute("normalimg");
	}
};