if (document.images) {
Button1MouseOff = new Image(); Button1MouseOff.src = "nav/Button1.png"
Button1MouseOver = new Image(); Button1MouseOver.src = "nav/Button1MouseOver.png"
Button1MouseDown = new Image(); Button1MouseDown.src = "nav/Button1MouseDown.png"	
Button2MouseOff = new Image(); Button2MouseOff.src = "nav/Button2.png"
Button2MouseOver = new Image(); Button2MouseOver.src = "nav/Button2MouseOver.png"
Button2MouseDown = new Image(); Button2MouseDown.src = "nav/Button2MouseDown.png"
Button3MouseOff = new Image(); Button3MouseOff.src = "nav/Button3.png"
Button3MouseOver = new Image(); Button3MouseOver.src = "nav/Button3MouseOver.png"
Button3MouseDown = new Image(); Button3MouseDown.src = "nav/Button3MouseDown.png"
Button4MouseOff = new Image(); Button4MouseOff.src = "nav/Button4.png"
Button4MouseOver = new Image(); Button4MouseOver.src = "nav/Button4MouseOver.png"
Button4MouseDown = new Image(); Button4MouseDown.src = "nav/Button4MouseDown.png"
Button5MouseOff = new Image(); Button5MouseOff.src = "nav/Button5.png"
Button5MouseOver = new Image(); Button5MouseOver.src = "nav/Button5MouseOver.png"
Button5MouseDown = new Image(); Button5MouseDown.src = "nav/Button5MouseDown.png"
Button6MouseOff = new Image(); Button6MouseOff.src = "nav/Button6.png"
Button6MouseOver = new Image(); Button6MouseOver.src = "nav/Button6MouseOver.png"
Button6MouseDown = new Image(); Button6MouseDown.src = "nav/Button6MouseDown.png"
Button7MouseOff = new Image(); Button7MouseOff.src = "nav/Button7.png"
Button7MouseOver = new Image(); Button7MouseOver.src = "nav/Button7MouseOver.png"
Button7MouseDown = new Image(); Button7MouseDown.src = "nav/Button7MouseDown.png"
Button8MouseOff = new Image(); Button8MouseOff.src = "nav/Button8.png"
Button8MouseOver = new Image(); Button8MouseOver.src = "nav/Button8MouseOver.png"
Button8MouseDown = new Image(); Button8MouseDown.src = "nav/Button8MouseDown.png"
}

function turnMouseOff(ImageName) {
	if (document.images != null) {
		document[ImageName].src = eval(ImageName + "MouseOff.src");
	}
}

function turnMouseOver(ImageName) {
	if (document.images != null) {
		document[ImageName].src = eval(ImageName + "MouseOver.src");
	}
}

function turnMouseDown(ImageName) {
	if (document.images != null) {
		document[ImageName].src = eval(ImageName + "MouseDown.src");
	}
}