function showtab(varclassid){
  try{
	setbgtd(varclassid);
	}catch(e){
		alert("a" + e);
	}
}
function showdiv(varname){
	var obj = eval(varname);
	obj.style.display = "";
}
function setbgtd(varclassid){
	try{
		var obj = eval("document.all.td"+varclassid);
		var divobj = eval("document.all.div"+varclassid);

		clearbgbypre(varclassid);
		cleardiv('');
		if(obj!=undefined){
			obj.style.backgroundImage = 'url(/www/Web_Images/zzjg/img_06a.gif)';
		}
		if(divobj!=undefined){
			divobj.style.display = "";
		}
	}catch(e){
		alert("b" + e);
	}
}
function clearbgbypre(varclassid){
   for(var k = 0 ;k < 4; k++)
   {
       if (k != varclassid) {
           var  obj = eval("document.all.td" + k);
    	   obj.style.backgroundImage = 'url(/www/Web_Images/zzjg/img_05a.gif)';
       }

  }

}
function cleardiv(varclassid){
	var obj1 = eval("document.all.div"+varclassid+"0");
 for(var kk = 0 ;kk < 4; kk++)
 {
    var obj2 = eval("document.all.div"+varclassid+kk);
	if(obj1!=undefined)
		obj2.style.display = "none";
		}
}