function rollover(imgMenu) {
	imgMenu.srcInit = imgMenu.src;
	imgMenu.src = imgMenu.src.replace(/.gif/,"-on.gif");
	imgMenu.onmouseout = function() {
		this.src = this.srcInit;	
	}
}

function popup(page) {
	window.open(page, "popup", "width=400,height=520,scrollbars=1");
}

function show(id) {
	document.getElementById(id).style.visibility = "visible";
}
function hide(id) {
	document.getElementById(id).style.visibility = "hidden";
}