function $(id){
			var	result = arguments.length === 1 ? document.getElementById(id) : 0;
			if(!result) {
				result = [];
				for(var i = 0, j = arguments.length; i < j; i++)
					result.push(document.getElementById(arguments[i]));
			};
			return result;
		};
		function acc(el){
			function show(){
				this.style.display='';
				bytefx.size(this, {width:this.Width,height:this.Height}, 9);
			};
			function hide(){
				bytefx.size(this, {width:this.Width,height:1}, 9, function(){
					this.style.display = "none";
				});
			};
			function begin(){
				for(var j = 0; j < max; j++) {
					if(j !== i)
						el[j].hide();
				};
				this.show();
			};
			var	tmp, i = 0, max = el.length;
			for(; i < max; i++) {
				tmp = bytefx.$size(el[i]);
				el[i].Height = tmp.height;
				el[i].Width = tmp.width;
				el[i].show = show;
				el[i].hide = hide;
				el[i].begin = begin;
			};
			return {
				begin:function(idx){
					if(!idx || idx >= el.length)
						idx = 0;
					el[idx].begin();
				}
			}
		};
		onload=function(){
			for(var	tmp = $('id1', 'id2', 'id3', 'id4', 'id5', 'id6', 'id7', 'id8', 'id9'), a = acc(tmp), i = 0; i < tmp.length; i++) {
				tmp[i].style.display = "none";
				a = tmp[i].parentNode.childNodes[0];
				if(!a.innerHTML)
					a = tmp[i].parentNode.childNodes[1];
				bytefx.$event(a, "onmouseover", function(){
					this.style.backgroundImage = "url(images/header.gif)";
				});
				bytefx.$event(a, "onmouseout", function(){
					this.style.backgroundImage = "url(images/header.gif)";
				});
			};
			tmp[0].begin();
		}