function go(url) {
	self.location.href=isDigit(url)?'?go='+url:url;
}

function isDigit(s) {
	var nums = "0123456789";
	for (i = 0; i < s.length; i++) { 
		if (nums.indexOf(s.charAt(i)) == -1) 
			return false;
	}
	return true;
}

function toggleBlock(id)
{
	var a =	document.getElementById('a'+id);
	var d =	document.getElementById('e'+id);
	d.style.display = (d.style.display == 'block') ? 'none' : 'block';
	a.style.backgroundImage = (d.style.display == 'block') ? "url('/images/min.gif')" : "url('/images/pls.gif')";
}