if (document.images) {
	middleBtnNorm0 = new Image
	middleBtnOvr0 = new Image
	middleBtnNorm0.src = 'images/product-but-pas.gif'
	middleBtnOvr0.src = 'images/product-but-act.gif'
	middleBtnNorm1 = new Image
	middleBtnOvr1 = new Image
	middleBtnNorm1.src = 'images/locate-but-pas.gif'
	middleBtnOvr1.src = 'images/locate-but-act.gif'
	middleBtnNorm2 = new Image
	middleBtnOvr2 = new Image
	middleBtnNorm2.src = 'images/custom-but-pas.gif'
	middleBtnOvr2.src = 'images/custom-but-act.gif'
	middleBtnNorm3 = new Image
	middleBtnOvr3 = new Image
	middleBtnNorm3.src = 'images/schools-but-pas.gif'
	middleBtnOvr3.src = 'images/schools-but-act.gif'
	middleBtnNorm4 = new Image
	middleBtnOvr4 = new Image
	middleBtnNorm4.src = 'images/corporate-but-pas.gif'
	middleBtnOvr4.src = 'images/corporate-but-act.gif'
	middleBtnNorm5 = new Image
	middleBtnOvr5 = new Image
	middleBtnNorm5.src = 'images/contact-but-pas.gif'
	middleBtnOvr5.src = 'images/contact-but-act.gif'
	
}
//end preload images
function swapImg(imgId, newImg) {
	if (document.images) {
		document[imgId].src=eval(newImg+'.src')
	}
}