onabout=new Image;
onabout.src= "images/on-about.gif";
onservices=new Image;
onservices.src= "images/on-services.gif";
onportfolio=new Image;
onportfolio.src= "images/on-portfolio.gif";
oncontact=new Image;
oncontact.src= "images/on-contact.gif";
onhshow=new Image;
onhshow.src= "images/on-hshow.gif";

function over(x,y){if(document.images) document.images[x].src="images/"+y+"-"+x+".gif";}