function showdiv(pass,but) {
		var divs = document.getElementById(pass).getElementsByTagName("div");
		for(i=0;i<divs.length;i++){
						if(divs[i].className == "con" ){
							divs[i].style.display = "block";
						}
						if(divs[i].id == but ){
							divs[i].style.display = "none";
						}
				}
	}
	
	function hidediv(pass,but) {
		var divs = document.getElementById(pass).getElementsByTagName("div");
		for(i=0;i<divs.length;i++){
				if(divs[i].className =="con" ){
					divs[i].style.display = "none";
				}
				if(divs[i].id == but ){
					divs[i].style.display = "block";
				}
		}
	}