function popup( url, w, h, x, y ) {

	var new_win = window.open( url, null, "width="+w+",height="+h+",top="+y+",left="+x+",status=no,toolbar=no,menubar=no,location=no,scrollbars=yes" );

}

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 addOnLoad( load_func ) {

	if ( !window.onload ) {
	
		window.onload = load_func;
	
	} else {
	
		var old_load_func = window.onload;
		
		window.onload = function() {
		
			old_load_func();
			load_func();
		
		}
	
	}

}