function selectLayer1(i)
{
 switch(i)
 {
 case 1:
document.getElementById("auto_menu_1").style.display="block";
document.getElementById("auto_menu_2").style.display="none";
document.getElementById("auto_menu_3").style.display="none";
document.getElementById("auto_menu_1_content").style.display="block";
document.getElementById("auto_menu_2_content").style.display="none";
document.getElementById("auto_menu_3_content").style.display="none";
document.getElementById("auto_menu_1").onclick = new Function('stopscroll = true');
break;
case 2:
document.getElementById("auto_menu_1").style.display="none";
document.getElementById("auto_menu_2").style.display="block";
document.getElementById("auto_menu_3").style.display="none";
document.getElementById("auto_menu_1_content").style.display="none";
document.getElementById("auto_menu_2_content").style.display="block";
document.getElementById("auto_menu_3_content").style.display="none";
document.getElementById("auto_menu_2").onclick = new Function('stopscroll = true');
 break;
 case 3:
document.getElementById("auto_menu_1").style.display="none";
document.getElementById("auto_menu_2").style.display="none";
document.getElementById("auto_menu_3").style.display="block";
document.getElementById("auto_menu_1_content").style.display="none";
document.getElementById("auto_menu_2_content").style.display="none";
document.getElementById("auto_menu_3_content").style.display="block";
document.getElementById("auto_menu_3").onclick = new Function('stopscroll = true');
 break;

 }
}