function __get_page_dimensions(){
	
	var xScroll, yScroll;
	
	if(window.innerHeight && window.scrollMaxY) 
	{	
		xScroll = document.body.scrollWidth;
		yScroll = window.innerHeight + window.scrollMaxY;
	} 
	else if (document.body.scrollHeight > document.body.offsetHeight)
	{ 
		// all but Explorer Mac
		
		xScroll = document.body.scrollWidth;
		yScroll = document.body.scrollHeight;
	} 
	else 
	{ 
		// Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
		
		xScroll = document.body.offsetWidth;
		yScroll = document.body.offsetHeight;
	}
	
	var windowWidth, windowHeight;
	
	if(self.innerHeight) 
	{	
		// all except Explorer
		
		windowWidth = self.innerWidth;
		windowHeight = self.innerHeight;
	} 
	else if(document.documentElement && document.documentElement.clientHeight) 
	{ 
		// Explorer 6 Strict Mode
		
		windowWidth = document.documentElement.clientWidth;
		windowHeight = document.documentElement.clientHeight;
	} 
	else if (document.body) 
	{ 
		// other Explorers
		
		windowWidth = document.body.clientWidth;
		windowHeight = document.body.clientHeight;
	}	
	
	// for small pages with total height less then height of the viewport
	
	if(yScroll < windowHeight)
	{
		pageHeight = windowHeight;
	} 
	else 
	{ 
		pageHeight = yScroll;
	}
	
	// for small pages with total width less then width of the viewport
	
	if(xScroll < windowWidth)
	{	
		pageWidth = windowWidth;
	} 
	else 
	{
		pageWidth = xScroll;
	}

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

function __pop_help(url)
{
	popup = window.open(url,'help','width=420,height=500,resizable,statusbar,scrollbars');
	popup.focus();
}