function goto_page(id) {
	document.location.href="?id="+id;
}
function goto_url(url) {
	document.location.href=url;
}
function goto_popup(loc) {
	if(loc.search(/\?/) == -1) {
		var url = loc;
		var pars = 'popup=true';
	} else {
		var arr = loc.split(/\?/);
		var url = arr[0];
		var pars = arr[1] + '&popup=true';
	}

	window.open(url + '?' + pars, '');
}