function getJump() {
	if (getVar('jump')) {
		return "?jump="+getVar('jump');
	} else {
		return "";
	}
}

function getVar(name) {
	var q = unescape(location.search.substring(1)).split(/[=&]/);
	for (var j=0; j<q.length; j+=2) {
		if (q[j] == name) {
			return q[j+1];
		}
	}
	return null;
}