function share(service)
{
	u=location.href;
	t=document.title; 
	if(service=="tw"){
		url = 'http://twitter.com/home?status='+encodeURIComponent(u)+' '+encodeURIComponent(t);
		wwidth = 564;
		wheight = screen.height/4*3;
	}
	else{
		url = 'http://www.facebook.com/sharer.php?u='+encodeURIComponent(u)+'&t='+encodeURIComponent(t);
		wwidth = 626;
		wheight = 436;
		}
	wleft = screen.width/2-wwidth/2;
	wtop = screen.height/2-wheight/2;
	sharewindow = window.open(url,' Share ', 'toolbar=0, status=0, width='+wwidth+', height='+wheight+',left='+wleft+',top='+wtop);
	//sharewindow.moveTo(0,0);
	return false;
}