// JavaScript Document

function imgOver( obj ) {
	obj.src = obj.src.replace("_out.gif", "_over.gif");
}//imgOver

function imgUp( obj ) {
	obj.src = obj.src.replace("_over.gif", "_out.gif");
}//imgUp

function initImgRollOver() {
   if (document.getElementById) {
      var imgIds = initImgRollOver.arguments;    // pass string IDs of containing map elements
      var i, j, img, areas;
      for (i = 0; i < imgIds.length; i++) {
        img = document.getElementById(imgIds[i]);
		img.onmouseover = imgSwap;
		img.onmouseout = imgSwap;
		img.onmousedown = imgSwap;
		img.onmouseup = imgSwap;
      }//for
   }//if
}//initImgRollOver

// image swapping event handling
function imgSwap(evt) {
   evt = (evt) ? evt : event;                   // equalize event models
   var elem = (evt.target) ? evt.target : evt.srcElement;
   
   switch (evt.type) {
      case "mousedown" :
         imgOver(elem);
         break;
      case "mouseout" :
         imgUp(elem);
         break;
      case "mouseover" :
         imgOver(elem);
         break
      case "mouseup" :
         imgUp(elem);
         break;
   }
   evt.cancelBubble = true;
   return false;
}


window.onload = function(e) {
	initImgRollOver( "navAboutUs", "navResources", "navTA", "navTraining", "navCertificate", "navCalendar", "navHighlights");	
} //function