function open_window(page, name, w, h) {
	w = (w == undefined) ? 400: w;
	h = (h == undefined) ? 300: h;
	name = (name == undefined) ? "external_window": name;
	
	my_window = window.open(page, name,	"menubar=no,scrollbars=1,width=" + w + ",height=" + h + ",toolbar=no");
	my_window.focus();
}

function new_page(page, name){
	my_window = window.open(page, name);
	my_window.focus();
}