function hover_cont(thecont) {	
		document.getElementById("index_cont1").style.display = "none";
		document.getElementById("index_cont2").style.display = "none";
		document.getElementById("index_cont3").style.display = "none";
		document.getElementById(thecont).style.display = "block";			
	}
	
	function out_cont() {	
		document.getElementById("index_cont1").style.display = "none";
		document.getElementById("index_cont2").style.display = "none";
		document.getElementById("index_cont3").style.display = "none";			
	}