<!--
	var sub_tree = 4;

	function view(num)
	{		
		if(num == 4 ) {
			for (i=1; i<=sub_tree; i++)
			{
				menu=eval("document.all.block"+i+".style");
				if (num==i)
				{
					if (menu.display == "block")
					{	
						menu.display="none";
					}
					else
					{
						

						menu.display="block";
					}
				}
				else
				{
					menu.display="none";
				}
			}
		}
		else {
												
		}
	}

    //-->