<!--

	var sub_tree = 2;



	function view(num)

	{		

		if(num ==  2 ) {

			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

					{

						if (num==1) Image1.src="img/menu_nato_01_on.gif";

						else if (num==2) Image2.src="img/menu_nato_03_on.gif";




						menu.display="block";

					}

				}

				else

				{

					menu.display="none";

				}

			}

		}

		else {

						if (num==1) Image1.src="img/menu_nato_01_on.gif";

						else if (num==2) Image2.src="img/menu_nato_03_on.gif";

											

		}

	}



    //-->