homeOff=new Image;homeOff.src="images/HomeOff.gif";
homeOn=new Image;homeOn.src="images/HomeOn.gif";
ingroundOff=new Image;ingroundOff.src="images/IngroundPoolsOff.gif";
ingroundOn=new Image;ingroundOn.src="images/IngroundPoolsOn.gif";
abovegroundOff=new Image;abovegroundOff.src="images/AboveGroundPoolsOff.gif";
abovegroundOn=new Image;abovegroundOn.src="images/AboveGroundPoolsOn.gif";
constprocessOff=new Image;constprocessOff.src="images/ConstructionProcessOff.gif";
constprocessOn=new Image;constprocessOn.src="images/ConstructionProcessOn.gif";
beforeandafterOff=new Image;beforeandafterOff.src="images/BeforeAndAfterOff.gif";
beforeandafterOn=new Image;beforeandafterOn.src="images/BeforeAndAfterOn.gif";
aboutusOff=new Image;aboutusOff.src="images/AboutUsOff.gif";
aboutusOn=new Image;aboutusOn.src="images/AboutUsOn.gif";
contactusOff=new Image;contactusOff.src="images/ContactUsOff.gif";
contactusOn=new Image;contactusOn.src="images/ContactUsOn.gif";

function buttonOn(imgName) {
imgOn = eval(imgName + 'On.src');
document[imgName].src = imgOn;
}
function buttonOff(imgName) {
imgOff = eval(imgName + 'Off.src');
document[imgName].src = imgOff;
}