/* common variables */
var ns4=(document.layers)? true:false,sf1=false,csf1=0;

function imgOn(a) {
	if (document[a]) document.images[a].src = eval(a + "on.src");
}

function imgOff(a) {
	if (document[a]) document.images[a].src = eval(a + "off.src");
}