function show (obj) {
        var ids = ['box1','box2','box3','box4','box5'];
        for (i = 0; i < ids.length; i++) {
           if (obj == ids[i]) {
             document.getElementById(obj).style.display = 'block';
           }  else  {
             document.getElementById(ids[i]).style.display ='none';
           }
        }
      }


var NN3 = false;
image1 = new Image();
image1.src = "../../img/menu_tab-off_01.gif";
image1on = new Image();
image1on.src = "../../img/menu_tab-on_01.gif";

image2 = new Image();
image2.src = "../../img/menu_tab-off_02.gif";
image2on = new Image();
image2on.src = "../../img/menu_tab-on_02.gif";

image3 = new Image();
image3.src = "../../img/menu_tab-off_03.gif";
image3on = new Image();
image3on.src = "../../img/menu_tab-on_03.gif";

image4 = new Image();
image4.src = "../../img/menu_tab-off_04.gif";
image4on = new Image();
image4on.src = "../../img/menu_tab-on_04.gif";

image5 = new Image();
image5.src = "../../img/menu_tab-off_05.gif";
image5on = new Image();
image5on.src = "../../img/menu_tab-on_05.gif";

function on3(name)   {
        document[name].src = eval(name + "on.src");
}

function clearimg(){
	document.image1.src = image1.src
	document.image2.src = image2.src
	document.image3.src = image3.src
	document.image4.src = image4.src
	document.image5.src = image5.src
         	
}

NN3 = true;

function on(name)  {
        if (NN3) on3(name);
}