function PageSize ()
{
	var xScroll, yScroll;
	var windowWidth, windowHeight;
	
	if (window.innerHeight && window.scrollMaxY) 
	{	xScroll = window.innerWidth + window.scrollMaxX;
		yScroll = window.innerHeight + window.scrollMaxY;
	} else if (document.body.scrollHeight > document.body.offsetHeight)
	{ xScroll = document.body.scrollWidth;
		yScroll = document.body.scrollHeight;
	} else 
	{ xScroll = document.body.offsetWidth;
		yScroll = document.body.offsetHeight;
	}

	if (self.innerHeight) 
	{	if(document.documentElement.clientWidth) windowWidth = document.documentElement.clientWidth; 
		else windowWidth = self.innerWidth;
		windowHeight = self.innerHeight;
	} else if (document.documentElement && document.documentElement.clientHeight) 
	{	windowWidth = document.documentElement.clientWidth;
		windowHeight = document.documentElement.clientHeight;
	} else if (document.body) 
	{ windowWidth = document.body.clientWidth;
		windowHeight = document.body.clientHeight;
	}	
	
	if(yScroll < windowHeight) pageHeight = windowHeight;
	else pageHeight = yScroll;

	if(xScroll < windowWidth) pageWidth = xScroll;		
	else pageWidth = windowWidth;

	return new Array (pageWidth, pageHeight, windowWidth, windowHeight);
}