function Popup(info) {
var neu=window.open('', "Popup", "height=500,width=650,directories=no,status=no,scrollbars=yes,resizable=yes,menubar=no,location=no,copyhistory=no,toolbar=no");
neu.document.location.href=info;
neu.focus();
}

var NN3 = false;
 i1= new Image();
 i1.src = "images/but1.jpg";
 i1on = new Image();
 i1on.src = "images/but1_a.jpg";

 i2= new Image();
 i2.src = "images/but2.jpg";
 i2on = new Image();
 i2on.src = "images/but2_a.jpg";

 i3= new Image();
 i3.src = "images/but3.jpg";
 i3on = new Image();
 i3on.src = "images/but3_a.jpg";

 i4= new Image();
 i4.src = "images/but4.jpg";
 i4on = new Image();
 i4on.src = "images/but4_a.jpg";

 i5= new Image();
 i5.src = "images/but5.jpg";
 i5on = new Image();
 i5on.src = "images/but5_a.jpg";



function on3(name)   {
         document[name].src = eval(name + "on.src");
 }
 function off3(name)  {
         document[name].src = eval(name + ".src");
 }
 NN3 = true;

 function on(name)  {
         if (NN3) on3(name);
 }
 function off(name)  {
         if (NN3) off3(name);
 }