<!--
function rollover(normal,over){
                        this.normal = new Image();
                        this.normal.src = normal;
                        this.over = new Image();
                        this.over.src = over;
                }
                
                function pdover(imgname){
                        if (document.images && imgname != defimg){
                                document[imgname].src = eval(imgname + ".over.src");
                        }
                }
                
                function pdout(imgname){
                        if (document.images && imgname != defimg){
                                document[imgname].src = eval(imgname + ".normal.src");
                        }
                }
                
                function pdchange(imgname){
                        if (document.images){
                                document[defimg].src = eval(defimg + ".normal.src");
                                document[imgname].src = eval(imgname + ".over.src");
                                defimg = imgname;
                        }
                }
                
                var defimg = 'bob';
				var home = new rollover("images/home.gif","images/home_on.gif");
				var about = new rollover("images/about.gif","images/about_on.gif");
				var inv = new rollover("images/inv.gif","images/inv_on.gif");
				var contact2 = new rollover("images/contact.gif","images/contact_on.gif");

				// -->