function LaunchWGVS()
{
	var height = 600, width = 800; //defaults
	if (document.all)
	{
		height =screen.availHeight;
		width = screen.availWidth;
	}
	else if (document.layers)
	{
		height = window.innerHeight;
		width = window.innerWidth;
	}

	height = Math.round(height*0.93)
	width = Math.round(width*0.93)

	window.open('../vs/vs.php', 'WGVS', 'toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=yes, resizable=yes, copyhistory=yes, width=' + width + ', height=' + height + ', screenX=50, screenY=50, top=50, left=50');
}

function LoadSurvey()
{
	var cookie = document.cookie;
	var pos = cookie.indexOf("wgvs=");
	var nextyear = new Date();
	nextyear.setFullYear(nextyear.getFullYear() + 1);

	if(pos != -1)
	{
	    var startpos = pos + 5;
	    var endpos = cookie.indexOf(";", startpos);
	    if(endpos == -1)
	        endpos = cookie.length;
		var count = cookie.substring(startpos, endpos);
		count = count + 1;
		if(count.length == 5)
		{
			document.cookie = "wgvs=; expires=" + nextyear.toGMTString();
			window.open
			(
				'../survey/index.php',
				'WGVSSurvey',
				'toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=yes, resizable=yes, copyhistory=yes, width=800, height=550, screenX=50, screenY=50, top=0, left=0'
			);
		}
		else document.cookie = "wgvs=" + count + "; expires=" + nextyear.toGMTString();
	}
	else document.cookie = "wgvs=" + 1 + "; expires=" + nextyear.toGMTString();
}