function showwarning()
{
		var maskHeight = $(document).height();
		var maskWidth = $(window).width();

		$('#mask').css({'width':maskWidth,'height':maskHeight});		
		$('#mask').fadeTo("slow",0.7);
		
		var winW = $(window).width();        
		//Set the popup window to center
		$('#warningdiv').css('left', winW/2-600/2);
		$('#warningdiv').fadeIn("slow");			
}
function hidewarning()
{	
		$('#warningdiv').fadeOut("fast");	
		$('#mask').fadeOut("fast");	
}
function showfwarning()
{
		var maskHeight = $(document).height();
		var maskWidth = $(window).width();

		$('#mask').css({'width':maskWidth,'height':maskHeight});			
		$('#mask').fadeTo("slow",0.7);
		
		var winW = $(window).width();        
		//Set the popup window to center
		$('#fwarningdiv').css('left', winW/2-600/2);
		$('#fwarningdiv').fadeIn("slow");		
}
function hidefwarning()
{	
		$('#fwarningdiv').fadeOut("fast");	
		$('#mask').fadeOut("fast");	
}