if (document.images){
image1a = new Image;
image2a = new Image;
image1b = new Image;
image2b = new Image;
image1c = new Image;
image2c = new Image;
image1d = new Image;
image2d = new Image;
image1e = new Image;
image2e = new Image;
image1f = new Image;
image2f = new Image;
image1a.src = 'images/home_up.jpg';
image2a.src = 'images/home_down.jpg';
image1b.src = 'images/contactus_up.jpg';
image2b.src = 'images/contactus_down.jpg';
image1c.src = 'images/aboutus_up.jpg';
image2c.src = 'images/aboutus_down.jpg';
image1d.src = 'images/customers_up.jpg';
image2d.src = 'images/customers_down.jpg';
image1e.src = 'images/sports_up.jpg';
image2e.src = 'images/sports_down.jpg';
image1f.src = 'images/awards_up.jpg';
image2f.src = 'images/awards_down.jpg';
}

function changeDiv (id) {
  document.getElementById(id).style.zIndex=100;
}

function resetDiv (id) {
	document.getElementById(id).style.zIndex=6;
}

function newWin(pathOfImage) {
var winl = (screen.width - 475) / 2;
var wint = (screen.height - 325) / 2;
winprops = 'height=535,width=520,top='+wint+',left='+winl+',scrollbars=no,resizable';
win = window.open(pathOfImage, 'your_title', winprops);
}