function Qdisplay_div(x)
{
	if(document.getElementById(x).style.visibility=='hidden')
	{
	document.getElementById(x).style.visibility="visible";
	document.getElementById(x).style.height = "";
	}
	else
	{
		document.getElementById(x).style.visibility="hidden";
		document.getElementById(x).style.height = "1px";
	}
}