function leftmenu(rootid,menucodel1,menucodel2,menucodel3){
	var root=document.getElementById(rootid);
	var $root=$(root);
	var onstr='.gif';
	var offstr='_.gif';
	var hoverclass='on';
	var srcarray;
	function rplks(str,keywords,newkey) {
		var patt=new RegExp(eval("/"+keywords+"/g"));
		//var patt=new RegExp(keywords,'g');
		if(patt.exec(str)!= null){
			var str=str.replace(patt,newkey);
		}
		return str;
	}
	function curh(obj){
			$(">li>a",$(obj.parentNode.parentNode)).each(function (){
				if(this.getElementsByTagName('img')[0]){
					$(">img:first",this).attr('src',rplks($(">img:first",this).attr('src'),offstr,onstr));
					$(this.parentNode).removeClass('hover');
				}else{
					$(this).removeClass('hover');
				}
			})
			$(obj.parentNode).addClass("hover");
			if(obj.getElementsByTagName('img')[0]){
				$(">img:first",$(obj)).attr('src',rplks($(">img:first",obj).attr('src'),onstr,offstr));
			}else{
				$(obj).addClass('hover');
			}
		}
	function cur(obj){
		//if(obj.parentNode.parentNode!=root){
			curh(obj);
		//}
		if(obj.parentNode.parentNode.getElementsByTagName('ul').length>0){
			$(" ul",$(obj.parentNode.parentNode)).each(function (){
				$(this).css({visibility:"hidden",height:'0',position:'absolute'});
			})
		}
		if(obj.parentNode.getElementsByTagName('ul').length>0){
			$(">ul:first",obj.parentNode).css({visibility:"visible",height:'auto'});
		}
	}
	function sethover(){
		if(typeof(menucodel1)=='undefined'||menucodel1==''||menucodel1=='0'){
			$(">li>ul",$root).css({visibility:"hidden",height:'0',position:'absolute'});
		}else{
			$(">li>a:first-child",$root).each(function (i){
				if(i==menucodel1-1){
					cur(this);
					curh(this);
					$(">ul>li>a:first-child",$(this.parentNode)).each(function (i){
						if(i==menucodel2-1){
								cur(this);
								curh(this);
						}
					})
				}
			})
		}
	}
	if(root){
		for(var i=0; i<root.getElementsByTagName('a').length; i++){
			var atag=root.getElementsByTagName('a')[i];
			atag.onclick=function(e){
				cur(this);
			};
			atag.onfocus=function(e){
				cur(this);
			};
			atag.onmouseover=function(e){
				cur(this);
			};
		}
		$(root.parentNode).hover(function (){},function (){
			sethover();
		})
		sethover();
	}
}

function displayOn() {
	var i,j,a=displayOn.arguments;
	for(i=0;i<a.length;i++) {
		obj = document.getElementById(a[i]);
		if (obj) { obj.style.display = "block"; }
	}
}
function displayOff() {
	var i,j,a=displayOff.arguments;
	for(i=0;i<a.length;i++) {
		obj = document.getElementById(a[i]);
		if (obj) { obj.style.display = "none"; }
	}
}