var isNav, isIE
var coll="";
var styleObj="";
last="";
if (parseInt(navigator.appVersion) >= 4)
{
  if (navigator.appName == "Netscape")
  {
    isNav = true
  } else
  {
    isIE = true
    coll = "all."
    styleObj = ".style"
  }
}

// Utility function sets the visibility of an object to visible
function show(obj)
{
  obj.visibility = "visible"
}
// Utility function sets the visibility of an object to hidden
function hide(obj)
{
  obj.visibility = "hidden"
}

// Utilities for turning on/off DIV tags
function turnon(info) {
  if (isNav)  {
   var obj=eval("document.getElementById('" + info + "').style.visibility='visible'");
  } else  {
    var obj=eval("document." + coll + info + styleObj)
    }
  show(obj)
  last=info;
}

function turnoff() {
  if (isNav)
  {
  var obj=eval("document.getElementById('" + last + "').style.visibility='hidden'");
  }  else  {
     var obj=eval("document." + coll + last + styleObj)
     }
  hide(obj)
}

function getInsideWindowWidth()
{
  if (isNav)
  {
    return window.innerWidth
  }
  else
  {
    return document.body.clientWidth
  }
}


// ************* Menu Display ****************
menu1 = new Image(28,95);
menu1.src = "imgs/cater0.gif";
menu1on = new Image(28,95);
menu1on.src = "imgs/cater1.gif";

menu2 = new Image(28,130);
menu2.src = "imgs/banquet0.gif";
menu2on = new Image(28,130);
menu2on.src = "imgs/banquet1.gif";

menu3 = new Image(28,160);
menu3.src = "imgs/spirits0.gif";
menu3on = new Image(35,160);
menu3on.src = "imgs/spirits1.gif";

menu4 = new Image(28,109);
menu4.src = "imgs/party0.gif";
menu4on = new Image(38,109);
menu4on.src = "imgs/party1.gif";

function img_act(imgDocID,imgObjName) {
 document.images[imgDocID].src = eval(imgObjName + ".src")
}