function worker(url) {	
	var rnd = "worker"+Math.random();
	var head = document.getElementsByTagName('head').item(0);	
	script = document.createElement('script');
	script.src = url+"&workerid="+rnd;	
	script.type = 'text/javascript';	
	script.defer = true;	
	script.id = rnd;
	void(head.appendChild(script));
}
function clearworker(id) {
	var n = document.getElementById(id);
	if (n)
		n.parentNode.removeChild(n);
}
function viewlarge() {
	document.getElementById('largepic').style.display = "block";
}
function closelarge() {
	document.getElementById('largepic').style.display = "none";
}