function Dialog(url, action, init, w, h, getWindowSize) {
	if (!getWindowSize) getWindowSize = false;
	if (typeof init == "undefined") {
		init = window;	// pass this window object by default
	}
	
	var w2, h2;
	if (getWindowSize){
		w2 = parseInt(window.screen.availWidth);
		h2 = parseInt(window.screen.availHeight);

		w = w2 + "px";
		h = h2 + "px";
	}else{
		w2 = parseInt(w);
		h2 = parseInt(h);
		
		if ((w2 > 0) && (h2 > 0)){
			w = w2 + "px";
			h = h2 + "px";
		}
	}

	if (document.all) {	// here we hope that Mozilla will never support document.all
		url += "&W=" + (w2 - 8) + "&H=" + (h2 - 32)
		var value = showModalDialog(url, init,
					"resizable: no; help: no; status: no; scroll: auto; dialogWidth: " + w + "; dialogHeight:" + h);
		if (action) {
			action(value);
		}
	}else{
		url += "&W=" + w2 + "&H=" + h2
		return Dialog._geckoOpenModal(url, action, init, w, h);
	}
};

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, w, h) {
	var dlg = window.open(url, "ha_dialog",
			      "toolbar=no,menubar=no,personalbar=no,width=" + w + ",height=" + h + "," +
			      "scrollbars=no,resizable=no,status=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;
	};
};

function closeMe(){
	try{
		window.parent.close();
	}catch(e){}
}