var d=function(){return document.getElementById(arguments[0]);}
	function tab(tabadid_num,tabadnum,number){
	    for(var i=0;i<number;i++){d("c"+tabadid_num+i+number).style.display="none";}
	    for(var i=0;i<number;i++){d("a"+tabadid_num+i+number).className="off";}
	    d("a"+tabadid_num+tabadnum+number).className="on";
	    d("c"+tabadid_num+tabadnum+number).style.display="block";
	}