function MM_findObj(n, d) { //v4.01

  var p,i,x;  

  if(!d) d=document; 

  if((p=n.indexOf("?"))>0&&parent.frames.length) 

  {

    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);

  }

  if(!(x=d[n])&&d.all) x=d.all[n]; 

  for (i=0;!x&&i<d.forms.length;i++) 

  	x=d.forms[i][n];

  for(i=0;!x&&d.layers&&i<d.layers.length;i++) 

  	x=MM_findObj(n,d.layers[i].document);

  if(!x && d.getElementById) x=d.getElementById(n); 

  return x;

}



function MM_swapImgRestore() { //v3.0

  var i,x,a=document.MM_sr; 

  for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) 

  	x.src=x.oSrc;

}



function MM_preloadImages() { //v3.0

  var d=document; 

  if(d.images)

  { 

	if(!d.MM_p) d.MM_p=new Array();

  	var i,j=d.MM_p.length,a=MM_preloadImages.arguments; 

  	for(i=0; i<a.length; i++)

	if (a[i].indexOf("#")!=0)

	{

    		d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];

	}

  }

}



function MM_swapImage() { //v3.0

  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)

   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}

}



function newImage(arg) {



     if (document.images) {

          rslt = new Image();

          rslt.src = arg;

          return rslt;

     }

}



function preloadImages() {



     if (document.images) {



		map_on = newImage("http://www.gatech.edu/images/topnav_map_on.gif");

		

		directories_on = newImage("http://www.gatech.edu/images/topnav_directories_on.gif");

		

		sitemap_on = newImage("http://www.gatech.edu/images/topnav_sitemap_on.gif");

		

		help_on = newImage("http://www.gatech.edu/images/topnav_help_on.gif");

		

		search_on = newImage("http://www.gatech.edu/images/topnav_search_on.gif");

				

	}

	

}