function Password() {
var leftprop, topprop, screenX, screenY, width, height
width = 200; height = 120;
if(navigator.appName == "Microsoft Internet Explorer")
{
	screenY = window.screen.availHeight;
	screenX = window.screen.availWidth;
}
else
{ 
		screenY = screen.height;
		screenX = screen.width;
}
	leftvar = (screenX - width) / 2;
	rightvar = (screenY - height) / 2;
		
	if(navigator.appName == "Microsoft Internet Explorer")
	{
		leftprop = leftvar;
		topprop = rightvar;
	}
	else
	{ // adjust Netscape coordinates for scrolling
		leftprop = (leftvar - pageXOffset);
		topprop = (rightvar - pageYOffset);
	}
properties = 'width='+width+',height='+height+',resizable=no,status=no,menubar=no,toolbar=no';
properties += ",left="+leftprop;
properties += ",top="+topprop;
PasswordBox = window.open('gatemain.html', 'Password', properties);
}