//preload images - Framework plugin

var loaded = false;


var imgdir = "assets/images/";

function preload() {

	if (document.images) {
		home_off = new Image;
		home_over = new Image;
		home_off.src = imgdir + "button_who_up.gif";
		home_over.src = imgdir + "button_who_down.gif";
		
		what_off = new Image;
		what_over = new Image;
		what_off.src = imgdir + "button_what_up.gif";
		what_over.src = imgdir + "button_what_down.gif";
		
		where_off = new Image;
		where_over = new Image;
		where_off.src = imgdir + "button_where_up.gif";
		where_over.src = imgdir + "button_where_down.gif";
		
		email_off = new Image;
		email_over = new Image;
		email_off.src = imgdir + "email_up.gif";
		email_over.src = imgdir + "email_down.gif";
		
		events_off = new Image;
		events_over = new Image;
		events_off.src = imgdir + "button_events_up.gif";
		events_over.src = imgdir + "button_events_down.gif";
		
		loaded = true;
	}

}

preload();

var doc,doc2,doc3,sty;

if (document.layers) {
  doc = "document.";
  doc2 = ".document.";
  doc3 = "";
  sty = "";
  }
else if (document.all) {
  doc = "document.all.";
  doc2 = "";
  doc3 = "";
  sty = ".style";
}

else if (document.getElementById) {
  doc = "document.getElementById('";
  doc2 ="')";
  doc3 ="')";
  sty = "').style";
 } 


// the rollover function for swapping images 
function rollit(obj,state) {

	if (loaded == true) { // if all image object have loaded
		if (document.layers) {
		
			source = eval(doc +doc2+obj);
		}else {
		
			source = eval(doc + obj+doc2);
		}
		
	newpic = eval(obj + '_'+ state);
	
	source.src = newpic.src;
  }
}