// mouse over image source
function imageOver(imName,path) {
	if (document.images) {
    	document.images[imName].src = path + imName + "_on.gif";
    }
}

// mouse out image source
function imageOut(imName,path) {
	if (document.images) {
    	document.images[imName].src = path + imName + "_off.gif";
    }
}