var myimage1 = new Image();
myimage1.src = "/images/b-home-on.gif";
var myimage2 = new Image();
myimage2.src = "/images/b-daycare-on.gif";
var myimage3 = new Image();
myimage3.src = "/images/b-boarding-on.gif";
var myimage4 = new Image();
myimage4.src = "/images/b-puppy-on.gif";
var myimage5 = new Image();
myimage5.src = "/images/b-rates-on.gif";
var myimage6 = new Image();
myimage6.src = "/images/b-about-on.gif";
var myimage7 = new Image();
myimage7.src = "/images/b-contact-on.gif";
//this one holds the image that gets swapped out.
var holder = new Image();