ns=window.navigator.appName == "Netscape"
ie=window.navigator.appName == "Microsoft Internet Explorer"

function openIt(x) {
     var items = 3      
     for (i=0; i<=items; i++) {
if(ns) {
      document.layers[i].visibility = "hide" 
      document.layers[x].visibility = "show"
      document.layers[x].left=150      
       }    
if(ie) {
      document.all.box[i].style.visibility = "hidden" 
      document.all.box[x].style.visibility = "visible" 
      document.all.box[x].style.left = 145
       }
    }
}

function closeIt() {
    var items = 3 
    for (i=0; i<=items; i++) {
       if(ie){document.all.box[i].style.visibility = "hidden"}
       if(ns){ document.layers[i].visibility = "hide"}          
}
}