function showhide(num){
	superdiv = "div"+num;
	if(document.getElementById(superdiv).style.visibility == "hidden"){
		document.getElementById(superdiv).style.visibility = "visible";
		document.getElementById(superdiv).style.overflow = "auto";
		document.getElementById(superdiv).style.height = "";
	}
	else{
		document.getElementById(superdiv).style.visibility = "hidden";	
		document.getElementById(superdiv).style.overflow = "hidden";	
		document.getElementById(superdiv).style.height = "1px";
	}
		document.getElementById(superdiv).style.display = "block";	
}