<!--
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/logo.gif","images/logo_on.gif");
                var homex = new rollover("images/home.gif","images/home_on.gif");
				var contact = new rollover("images/contact.gif","images/contact_on.gif");
				var whatis = new rollover("images/whatis.gif","images/whatis_on.gif");
				var why = new rollover("images/why.gif","images/why_on.gif");
				var purchase = new rollover("images/purchase.gif","images/purchase_on.gif");
				var instructions = new rollover("images/instructions.gif","images/instructions_on.gif");
				var interpreting = new rollover("images/interpreting.gif","images/interpreting_on.gif");
				var purchasex = new rollover("images/purchase_but.gif","images/purchase_but_on.gif");
               

// -->