function popup_window(URL,Name,features) {
	window.open(URL,Name,features);
}

function dialog_window(URL,variable,features) {
	showModalDialog(URL,variable,features);
}

function setVisible(layer){
	if (layer.style.visibility=="hidden"){
		layer.style.visibility="visible";
	} else {
		layer.style.visibility="hidden";
	}
}