//<!--控制菜单变色项目-->
	nereidFadeObjects = new Object();
	nereidFadeTimers = new Object();
	function nereidFade(object, destOp, rate, delta){
	if (!document.all)
	return
		if (object != "[object]"){ 
			setTimeout("nereidFade("+object+","+destOp+","+rate+","+delta+")",0);
			return;
		}
		clearTimeout(nereidFadeTimers[object.sourceIndex]);
		diff = destOp-object.filters.alpha.opacity;
		direction = 1;
		if (object.filters.alpha.opacity > destOp){
			direction = -1;
		}
		delta=Math.min(direction*diff,delta);
		object.filters.alpha.opacity+=direction*delta;
		if (object.filters.alpha.opacity != destOp){
			nereidFadeObjects[object.sourceIndex]=object;
			nereidFadeTimers[object.sourceIndex]=setTimeout("nereidFade(nereidFadeObjects["+object.sourceIndex+"],"+destOp+","+rate+","+delta+")",rate);
		}
	}
///<!--控制菜单变色项目-->

// 指向变换背景图片----------------------------
function ChangeBackground(MyObj,NewBackground){ 
  MyObj.style.backgroundImage=NewBackground;
}   

window.onload=menuFix;
function menuFix() {
	var Els = document.getElementById("mainMenu").getElementsByTagName("li");
	for (var i=0; i<Els.length; i++) {
		Els[i].onmouseover=function() {
			this.className+=(this.className.length>0? " ": "") + "hover";
		}
		Els[i].onMouseDown=function() {
			this.className+=(this.className.length>0? " ": "") + "hover";
		}
		Els[i].onMouseUp=function() {
			this.className+=(this.className.length>0? " ": "") + "hover";
		}
		Els[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp("( ?|^)hover\\b"),"");
		}
	}
}