//preloading one image
var roll1 = new Image();
roll1.src = "images/menu_left_hover.gif";
var roll2 = new Image();
roll2.src = "images/menu_right_hover.gif";

function findObj(theObj, theDoc)
{
  var p, i, foundObj;
  
  if(!theDoc) theDoc = document;
  if( (p = theObj.indexOf("?")) > 0 && parent.frames.length)
  {
    theDoc = parent.frames[theObj.substring(p+1)].document;
    theObj = theObj.substring(0,p);
  }
  if(!(foundObj = theDoc[theObj]) && theDoc.all) foundObj = theDoc.all[theObj];
  for (i=0; !foundObj && i < theDoc.forms.length; i++) 
    foundObj = theDoc.forms[i][theObj];
  for(i=0; !foundObj && theDoc.layers && i < theDoc.layers.length; i++) 
    foundObj = findObj(theObj,theDoc.layers[i].document);
  if(!foundObj && document.getElementById) foundObj = document.getElementById(theObj);
  
  return foundObj;
}

function overIt(obj) {
	var m = findObj(obj + "_left");
	m.src = "images/menu_left_hover.gif";
	var m = findObj(obj + "_right");
	m.src = "images/menu_right_hover.gif";
}

function outIt(obj) {
	var m = findObj(obj + "_left");
	m.src = "images/menu_left.gif";
	var m = findObj(obj + "_right");
	m.src = "images/menu_right.gif";
}