var browserOK = false;
	var pics;

	browserOK = true;
	pics = new Array();

	var objCount = 0;

	function preload(name, first, second) {  

 	if (browserOK) {     
    pics[objCount] = new Array(3);
    pics[objCount][0] = new Image();
    pics[objCount][0].src = first;
    pics[objCount][1] = new Image();
    pics[objCount][1].src = second;
    pics[objCount][2] = name;
    objCount++;
  }
}

function on(name){
  if (browserOK) {
     for (i = 0; i < objCount; i++) {
      if (document.images[pics[i][2]] != null)
        if (name != pics[i][2]) { 
   
            document.images[pics[i][2]].src = pics[i][0].src;
        } else {
 
             document.images[pics[i][2]].src = pics[i][1].src;
        }
    }
  }
}

function off(){
  if (browserOK) {
     for (i = 0; i < objCount; i++) {
     
      if (document.images[pics[i][2]] != null) 
            document.images[pics[i][2]].src = pics[i][0].src;
    }
  }
}

preload("link1", "img/menu/1.gif", "img/menu/1_2.gif");
preload("link2", "img/menu/2.gif", "img/menu/2_2.gif");
preload("link3", "img/menu/3.gif", "img/menu/3_2.gif");
preload("link4", "img/menu/4.gif", "img/menu/4_2.gif");
preload("link5", "img/menu/5.gif", "img/menu/5_2.gif");
preload("signature", "img/design/signature.gif", "img/design/signature2.gif");