function menuFix() {
	var sfEls = document.getElementById("k_menu").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"), 

"");
		}
	}
}
<div align="center">
<a href="http://210.76.65.188/webrecord/innernet/Welcome.jsp"><img border="0" src="http://210.76.65.188/webrecord/innernet/images/waicon.gif" width="40" height="48" align="middle"></a>
<a target="_blank" href="http://210.76.65.188/netalarm/index.jsp"><img border="0" src="http://210.76.65.188/newwebsite/images/netjc/chacha_4408.gif" height="48"><img border="0" src="http://210.76.65.188/newwebsite/images/netjc/jinjin_4408.gif" height="48"></a>
<a target="_blank" href="http://210.76.65.188/netalarm/index.jsp"><img border="0" src="http://www.gdnet110.gov.cn/dtxx/W020070926617687834175.jpg" align="middle"height="48"></a>
</div>