function left_menu (a,b)
 	{
		var d=document;
		var elem=d.getElementById(a);
 		if(b==1)
			{
		 		elem.src="images/shest_on.png";
			}
		else
			{
				elem.src="images/shest.png";
			}
	}	 
	
function top_menu(a,b)
	{
	 	var d=document;
		var elem=d.getElementById('t'+a);
		if(b==1)
			{
		 		elem.style.backgroundImage="url(images/line_for_top_menu_on.png)";
			}
		else
			{
				elem.style.backgroundImage="url(images/line_for_top_menu.png)";
			}
	}
	 
function show_help_search(b)
	{
	 	var d=document;
		var elem=d.getElementById('showhelp');
 		if(b==1)
			{
		 		elem.style.display="block";
			}
		else
			{
				elem.style.display="none";
			}
	}