// Though "Dialog" looks like an object, it isn't really an object.  Instead

// it's just namespace for protecting global symbols.



function Dialog(url, action, init) {

	if (typeof init == "undefined") {

		init = window;	// pass this window object by default

	}

	if (document.all) {	// here we hope that Mozilla will never support document.all

		var value =

			showModalDialog(url, init,

//			window.open(url, '_blank',

					"resizable: no; help: no; status: no; scroll: no");

		if (action) {

			action(value);

		}

	} else {

		return Dialog._geckoOpenModal(url, action, init);

	}

};



Dialog._parentEvent = function(ev) {

	if (Dialog._modal && !Dialog._modal.closed) {

		Dialog._modal.focus();

		// we get here in Mozilla only, anyway, so we can safely use

		// the DOM version.

		ev.preventDefault();

		ev.stopPropagation();

	}

};



// should be a function, the return handler of the currently opened dialog.

Dialog._return = null;



// constant, the currently opened dialog

Dialog._modal = null;



// the dialog will read it's args from this variable

Dialog._arguments = null;



Dialog._geckoOpenModal = function(url, action, init) {

	var dlg = window.open(url, "ha_dialog",

			      "toolbar=no,menubar=no,personalbar=no,width=10,height=10," +

			      "scrollbars=no,resizable=no");

	Dialog._modal = dlg;

	Dialog._arguments = init;



	// capture some window's events

	function capwin(w) {

		w.addEventListener("click", Dialog._parentEvent, true);

		w.addEventListener("mousedown", Dialog._parentEvent, true);

		w.addEventListener("focus", Dialog._parentEvent, true);

	};

	// release the captured events

	function relwin(w) {

		w.removeEventListener("focus", Dialog._parentEvent, true);

		w.removeEventListener("mousedown", Dialog._parentEvent, true);

		w.removeEventListener("click", Dialog._parentEvent, true);

	};

	capwin(window);

	// capture other frames

	for (var i = 0; i < window.frames.length; capwin(window.frames[i++]));

	// make up a function to be called when the Dialog ends.

	Dialog._return = function (val) {

		if (val && action) {

			action(val);

		}

		relwin(window);

		// capture other frames

		for (var i = 0; i < window.frames.length; relwin(window.frames[i++]));

		Dialog._modal = null;

	};

};