function highlightSubDir() 
{

	// MUST CHANGE THIS UPON LAUNCH!!!!
	// NOTE: More than likely, this can be changed to to simply "/images/support/buttons/"
	// as that first /  denotes the base path.

	// Absolute path to the buttons directory.
	var PATH = "http://www.clarkson.edu/images/support/buttons/";
	
	var Button_Arr = new Array();
	var Menu_Arr = new Array();
	var Folder_Arr = new Array("clarkson_experience","programs_of_study","research_innovation", "getting_into_clarkson", "learning_resources", "life_at_clarkson", "professional_connections", "headlines_events");

	//map the sub directory to the "ON" version of the image.
	Button_Arr["clarkson_experience"] = "clarkson_experience_on.gif";
	Button_Arr["programs_of_study"] = "programs_of_study_on.gif";
	Button_Arr["research_innovation"] = "research_and_innovation_on.gif";
	Button_Arr["getting_into_clarkson"] = "getting_into_clarkson_on.gif";
	Button_Arr["learning_resources"] = "learning_resources_on.gif";
	Button_Arr["life_at_clarkson"] = "life_at_clarkson_on.gif";
	Button_Arr["professional_connections"] = "professional_connections_on.gif";
	Button_Arr["headlines_events"] = "headlines_and_events_on.gif";

	//define the menu array map for the getElementById call later.
	Menu_Arr["clarkson_experience"] = "menu0";
	Menu_Arr["programs_of_study"] = "menu1";
	Menu_Arr["research_innovation"] = "menu2";
	Menu_Arr["getting_into_clarkson"] = "menu3";
	Menu_Arr["learning_resources"] = "menu4";
	Menu_Arr["life_at_clarkson"] = "menu5";
	Menu_Arr["professional_connections"] = "menu6";
	Menu_Arr["headlines_events"] = "menu7";

	//use string maniuplation to grab the subdirectory from the URL
	var url = document.URL;
	var url_arr = url.split("/");
	
	
	var i=0;
	var set = false;
	var arr_length = url_arr.length; 
	
	 while(i<arr_length)
	 {
		 if(url_arr[url_arr.length-2] == Folder_Arr[i])
		 {
			 var dir = url_arr[url_arr.length-2];
			 set = true;
		 }
		 else if(url_arr[url_arr.length-3] == Folder_Arr[i])
		 {
			 var dir = url_arr[url_arr.length-3];
			 set = true;
		 }
		 else if(url_arr[url_arr.length-4] == Folder_Arr[i])
		 {
			 var dir = url_arr[url_arr.length-4];
			 set = true;
		 }
		 i++;
	 }
	
	//obtain unique element id for target menu image
	var ImgElement = document.getElementById(Menu_Arr[dir]);
	if(set == true)
	{
	//set the Image SRC to the "ON" version.
	ImgElement.src = PATH+Button_Arr[dir];
	}
}

function divideString()
{
  var url = document.URL
  var url_array = url.split("/");
  var page = url_array[url_array.length-1].split(".");
  var page0 = page[0];
  
 /* if (page0 == ''){  var page_name = "images/backgrounds/index.jpg"; }*/
 if (page0 == ''){  var page_name = "http://www.clarkson.edu/images/backgrounds/index.jpg"; }
  else{  var page_name = "images/backgrounds/" + page0 + ".jpg";}
  return page_name;
 }


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];}}
	
	var backImage = document.getElementById('leftcontent2');
         var ds = divideString();
         var url = "url(" + ds + ")";
        backImage.style.backgroundImage = url;
	
	//this must go after the images have been loaded...
	//otherwise, the menu images won't even exists yet.
	highlightSubDir();
}

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_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_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 doClock(){ // By Paul Davis - www.kaosweaver.com
  var t=new Date(),a=doClock.arguments,str="",i,a1,lang="1";
  var month=new Array('January','Jan', 'February','Feb', 'March','Mar', 'April','Apr', 'May','May', 'June','Jun', 'July','Jul', 'August','Aug', 'September','Sep', 'October','Oct', 'November','Nov', 'December','Dec');
  var tday= new Array('Sunday','Sun','Monday','Mon', 'Tuesday','Tue', 'Wednesday','Wed','Thursday','Thr','Friday','Fri','Saturday','Sat');
  for(i=0;i<a.length;i++) {a1=a[i].charAt(1);switch (a[i].charAt(0)) {
  case "M":if  ((Number(a1)==3) && ((t.getMonth()+1)<10)) str+="0";
  str+=(Number(a1)>1)?t.getMonth()+1:month[t.getMonth()*2+Number(a1)];break;
  case "D": if ((Number(a1)==1) && (t.getDate()<10)) str+="0";str+=t.getDate();break;
  case "Y": str+=(a1=='0')?t.getFullYear():t.getFullYear().toString().substring(2);break;
  case "W":str+=tday[t.getDay()*2+Number(a1)];break; default: str+=unescape(a[i]);}}return str;
}

function StaticBG()
{
    //when called, restores the page to a default background navigation image.
    var backImage = document.getElementById('leftcontent2');
    var url = "url('http://www.clarkson.edu/images/backgrounds/index.jpg')";
    backImage.style.backgroundImage = url;
}