function openWindow( url, width, height, scrollbars, resizable ) {
    if( typeof( width ) == "undefined" ) {
	width = 350;
    }
    if( typeof( height ) == "undefined" ) {
	height = 480;
    }
    if( typeof( scrollbars ) == "undefined" ) {
	scrollbars = 'yes';
    }
    if( typeof( resizable ) == "undefined" ) {
	resizable = 'yes';
    }
    randName = 'windowName'+Math.round(Math.random()*1000000);
    window.open( url, randName, 'width='+width+',height='+height+',status=no,menubar=no,resizable='+resizable+',scrollbars='+scrollbars );
}