var browser=navigator.appName 
var b_version=navigator.appVersion 
var version=b_version.split(";"); 
var trim_Version=version[1].replace(/[ ]/g,""); 

if(browser=="Microsoft Internet Explorer" && trim_Version=="MSIE6.0")  //判断IE6
{ 
function menuFix() { 
var sfEls = document.getElementById("zxmenu").getElementsByTagName("li"); 
for (var i=0; i<sfEls.length; i++) { 
sfEls[i].onmouseover=function() { 
this.className+=(this.className.length>0? " ": "") + "sfhover"; 
} 
sfEls[i].onMouseDown=function() { 
this.className+=(this.className.length>0? " ": "") + "sfhover"; 
} 
sfEls[i].onMouseUp=function() { 
this.className+=(this.className.length>0? " ": "") + "sfhover"; 
} 
sfEls[i].onmouseout=function() { 
this.className=this.className.replace(new RegExp("( ?|^)sfhover\\b"), 
""); } } } window.onload=menuFix; }
else {
	function displaySubMenu(li) { 
var subMenu = li.getElementsByTagName("ul")[0]; 
subMenu.style.display = "block"; 
} 
function hideSubMenu(li) { 
var subMenu = li.getElementsByTagName("ul")[0]; 
subMenu.style.display = "none"; 
} 
	}