function commons_popup(url, title, width, height) {
var wihe = 'width='+width+',height='+height; 
var startx = (screen.availWidth - width)/2; 
var starty = (screen.availHeight - height)/2;  
props=window.open(url, title, 'toolbars=0, scrollbars=0, location=0, statusbars=0, menubars=0, resizable=1, screenX='+startx+', screenY='+starty+', left='+startx+', top='+starty+',' + wihe);
} 

function $() {
	var elements = new Array();
	for (var i = 0; i < arguments.length; i++) {
		var element = arguments[i];
		if (typeof element == 'string')
			element = document.getElementById(element);
		if (arguments.length == 1)
			return element;
		elements.push(element);
	}
	return elements;
}

function commons_userid() {return $('Remote_User').value;}