// Window functions

// http://www.dithered.com/javascript/window/index.html

// code by Chris Nott (chris@dithered.com)



/*******************************************************************************

	Popup Window openers

*******************************************************************************/



var winReference = null;





// Open a window at a given position on the screen

function openPositionedWindow(url, name, width, height, x, y, status, scrollbars, openerName) {

	

	// ie4.5 mac - windows are 2 pixels too short; if a statusbar is used, the window will be an additional 15 pixels short

	var agent = navigator.userAgent.toLowerCase();

	if (agent.indexOf("mac")!=-1 && agent.indexOf("msie") != -1 && agent.indexOf("msie 5.0")==-1) {

		height += 2;

		if (status) height += 15;

	}

	

	var properties = 'width=' + width + ',height=' + height + ',screenX=' + x + ',screenY=' + y + ',left=' + x + ',top=' + y + ((status) ? ',status' : '') + ',scrollbars' + ((scrollbars) ? '' : '=no');

	winReference = window.open(url, name, properties);

	if (openerName) self.name = openerName;

	

	// resize window in ie if we can resize in ns; very messy

	// commented out because openPositionedWindow() doesn't set the resizable attribute

	// left in for reference

	/*if (resizable && agent.indexOf("msie") != -1) {

		if (agent.indexOf("mac") != -1) {

			height += (status) ? 15 : 2;

			if (parseFloat(navigator.appVersion) > 5) width -= 11;

		}

		else {

			height += (status) ? 49 : 31;

			width += 13;

		}

		setTimeout('if (winReference != null && !winReference.closed) winReference.resizeTo(' + width + ',' + height + ');', 200);

	}*/



	// ie doesn't like giving focus immediately (to new window in 4.5 on mac; to existing ones in 5 on pc)

	setTimeout('if (winReference && !winReference.closed) winReference.focus()', 250);

	return winReference;

}





// Open a window at the center of the screen

function openCenteredWindow(url, name, width, height, status, scrollbars, openerName) {

	var x = 0;

	var y = 0;

	if (screen) x = (screen.availWidth - width) / 2;

	if (screen) y = (screen.availHeight - height) / 2;

	if (!status) status == '';

	if (!scrollbars) scrollbars == '';
	
	if (!openerName) openerName == '';

	var reference = openPositionedWindow(url, name, width, height, x, y, status, scrollbars, openerName);

	return reference;

}	





// Open a full-screen window (different from IE's fullscreen option)

function openMaxedWindow(url, name, scrollbars, openerName) {

	var width  = 600;

	var height = 800;

	if (screen) width  = screen.width - 10;

	if (screen) height = screen.height - 30;

	var reference = openPositionedWindow(url, name, width, height, 0, 0, false, scrollbars, openerName);

	return reference;

}





// Open a full-chrome (all GUI elements) window

// This is like using a target="_blank" in a normal link but allows focussing the window

function openFullChromeWindow(url, name, openerName) {

	winReference = window.open(url, name, 'directories,location,menubar,resizable,scrollbars,status,toolbar');

	if (openerName) self.name = openerName;

	

	// ie doesn't like giving focus immediately (to new window in 4.5 on mac; to existing ones in 5 on pc)

	setTimeout('if (winReference && !winReference.closed) winReference.focus()', 250);

	return winReference;

}





/*******************************************************************************

	Modal Dialog controls

*******************************************************************************/



// Close a dialog

// Call from onunload event handler of any page that can create a dialog

function closeDialog(dialog) {

	if (dialog && dialog.closed != true) dialog.close();

}





// Close parent popup

// Call from onload event handler of any page that could be created from a dialog

function closeParentDialog() {

	if (top.opener && isWindowPopup(top.opener)) {

		root = top.opener.top.opener;

		top.opener.close();

		top.opener = root;

	}

}





// Check if a window is a popup

function isWindowPopup(win) {

	return ((win.opener) ? true : false);

}