function openPopupWindow(url, name, width, height, returnWindow)
{
	var horizontalOffset, verticalOffset, offsetAmount, windowToReturn;
		
	offsetAmount = 20;

	if(width == -1)
	{
		width = screen.availWidth;
	}
	
	if(height == -1)
	{
		height = screen.availHeight;
	}
	
	if(navigator.appName == "Microsoft Internet Explorer")
	{
		horizontalOffset = window.screenLeft + offsetAmount;
		verticalOffset = window.screenTop + offsetAmount;
	}
	else
	{
		horizontalOffset = window.screenX + offsetAmount;
		verticalOffset = window.screenY + offsetAmount;
	}
	
	if(horizontalOffset + width > screen.availWidth || verticalOffset + height > screen.availHeight)
	{
		horizontalOffset = 0;
		verticalOffset = 0;
	}
		
	windowToReturn = window.open(url, name, "toolbar=0,location=0,directories=0,status=yes,menubar=no,scrollbars=1,resizable=yes,screenX=" + horizontalOffset + ",screenY=" + verticalOffset + ",left=" + horizontalOffset + ",top=" + verticalOffset + ",width=" + width + ",height=" + height);
		
	if(returnWindow == true)
		return windowToReturn;
}