function showing(curentpage,aid) {
	
	
	
			
			
			for(var i=1;i<9;i++) {
			
			
			document.getElementById("content_0"+i).className="hidediv";

				document.getElementById("a"+i).className="normal";
			
			
			}
			
			document.getElementById(curentpage).className="showdiv";
			document.getElementById(aid).className="current";
					
	}