function close_popup(id)
{
	var popup_bg = id+"_bg";
	
	document.getElementById(id).style.display = 'none'; 
	document.getElementById(popup_bg).style.display = 'none'; 
	return false;
}

function OpenWindow(theURL,winName,w,h,scroll)
{
	LeftPosition = (screen.width) ? (screen.width-w)/2 : 0;
	TopPosition = (screen.height) ? (screen.height-h)/2 : 0;
	settings ='height='+h+',width='+w+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',resizable=no'
	window.open(theURL,winName,settings);
}