function set_loading_system(div, show)
{
	if(show ==1)
	{
		if(!div)
			$.blockUI({overlayCSS:{opacity:0}});
		else
			$(div).block({overlayCSS:{opacity:0}});
	}
	else
	{
		
		if(!div)
			$.unblockUI(); 
		else
			$(div).unblock();
			
	}
}