document.write("<div id=\"leader_div_top\"></div>");

var m=2; //共几个Banner随机显示 
				var n=Math.floor(Math.random()*m+1) 
				switch(n) 
				{ 
					
					case 1:
					
					var adlinks = '<a href="http://www.tek.com/zh/products/digitalmultimeters/landing/" target="_blank" onclick="clickStat(this,\'cms_cscl_tek1\');"><img src="http://1.eewimg.cn/ad/tek/leader-simpChinese-900x90.gif" border="0" /></a>';
					document.getElementById("leader_div_top").innerHTML = "";
					document.getElementById("leader_div_top").innerHTML = adlinks; 
					break;
					
					case 2:
					
					var adlinks = '<a href="http://www.tek.com/zh/Measurement/programs/catalog/" target="_blank" onclick="clickStat(this,\'cms_cscl_tek2\');"><img src="http://1.eewimg.cn/ad/tek/Tek_Portfolio_900x90_SimplifiedChinese.gif" border="0" /></a>';
					document.getElementById("leader_div_top").innerHTML = "";
					document.getElementById("leader_div_top").innerHTML = adlinks; 
					break;
					
					//case 1:  
					//var so = new SWFObject('http://1.eewimg.cn/ad/tek/leader-simpChinese-900x90.swf','leader-simpChinese-900x90','900','90','9','#ffffff');
					//so.addParam('quality','high');
					//so.addVariable('clickTag','http://www.tek.com/zh/products/digitalmultimeters/landing/');
					//so.write('leader_div');
					//break;
					//case 2:
					//var so = new SWFObject('http://1.eewimg.cn/ad/tek/Tek_Portfolio_900x90_SimplifiedChinese.swf','Tek_Portfolio_900x90_SimplifiedChinese','900','90','9','#ffffff');
					//so.addParam('quality','high');
					//so.addVariable('clickTAG','http://www.tek.com/zh/Measurement/programs/catalog/');
					//so.write('leader_div');
					//break;
				}