//Размер документа по вертикали  
	function getDocumentHeight()  
	{  
		var maincontent = document.getElementById("maintable");
		return maincontent.offsetHeight;
//	    return (document.body.scrollHeight > document.body.offsetHeight)?document.body.scrollHeight:document.body.offsetHeight;  
	}  
	 
	//Размер документа по горизонтали  
	function getDocumentWidth()  
	{  
		var maincontent = document.getElementById("maintable");
		return maincontent.offsetWidth;
//	    return (document.body.scrollWidth > document.body.offsetWidth)?document.body.scrollWidth:document.body.offsetWidth;  
	}  
	function show_pr()
	{
		var square_b = document.getElementById("div_banners");
		var horiz_banners = document.getElementById("horiz_banners");
		var maintable = document.getElementById("maintable");
//		square_b.style.width = getDocumentWidth();
		square_b.style.height = getDocumentHeight();
		square_b.style.opacity = 1;
		square_b.style.display = '';
		
		horiz_banners.style.opacity = 0.3;
		maintable.style.opacity = 0.3;		
		horiz_banners.style.filter = "progid:DXImageTransform.Microsoft.Alpha(opacity=30)";
		maintable.style.filter = "progid:DXImageTransform.Microsoft.Alpha(opacity=30)";
	}
	function hide_pr()
	{
		var square_b = document.getElementById("div_banners");
		var horiz_banners = document.getElementById("horiz_banners");
		var maintable = document.getElementById("maintable");
//		square_b.style.width = getDocumentWidth();
		square_b.style.height = getDocumentHeight();
		square_b.style.opacity = 1;
		square_b.style.display = 'none';
			
		horiz_banners.style.filter = "progid:DXImageTransform.Microsoft.Alpha(opacity=100)";
		maintable.style.filter = "progid:DXImageTransform.Microsoft.Alpha(opacity=100)";
		horiz_banners.style.opacity = 1;
		maintable.style.opacity = 1;
	}