// $Author: jgardner $
// $Revision: 1.1 $
// $Date: 2003/04/09 00:38:10 $
// $Name:  $
// Window functions  v1.01
// 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, moreProperties, 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;
	}

	// Adjust width if scrollbars are used (pc places scrollbars inside the content area; mac outside) 
	width += (scrollbars != '' && scrollbars != null && agent.indexOf("mac") == -1) ? 16 : 0;

	var properties = 'width=' + width + ',height=' + height + ',screenX=' + x + ',screenY=' + y + ',left=' + x + ',top=' + y + ((status) ? ',status' : '') + ',scrollbars' + ((scrollbars) ? '' : '=no') + ((moreProperties) ? ',' + moreProperties : '');
	var reference = openWindow(url, name, properties, 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 (reference != null && !reference.closed) reference.resizeTo(' + width + ',' + height + ');', 150);
	}*/

	return reference;
}


// Open a window at the center of the screen
function openCenteredWindow(url, name, width, height, status, scrollbars, moreProperties, 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 (!openerName) openerName == '';
	var reference = openPositionedWindow(url, name, width, height, x, y, status, scrollbars, moreProperties, openerName);
	return reference;
}	

// Open a window at the center of the screen
function openExtWindow(url, name, openerName) {
	var winWidth = 533;
	var winHeight = 399;
	var x = 0;
	var y = 0;
	if (screen) x = (screen.availWidth - winWidth) / 2;
	if (screen) y = (screen.availHeight - winHeight) / 2;
	if (!status) status == '';
	if (!openerName) openerName == '';
	var reference = openPositionedWindow(url, name, winWidth, winHeight, x, y, true, true, 'directories,location,menubar,resizable,toolbar', openerName);
	return reference;
}	



// Open a full-screen window (different from IE's fullscreen option)
function openMaxedWindow(url, name, scrollbars, openerName, moreProperties) {
	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, moreProperties);
	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) {
	return openWindow(url, name, 'directories,location,menubar,resizable,scrollbars,status,toolbar');
}


// Core utility function that actually creates the window and gives focus to it
function openWindow(url, name, properties, openerName) {

	// ie4.x pc can't give focus to windows containing documents from a different domain
	// in this case, initially load a local interstisial page to allow focussing before loading final url
	var agent = navigator.userAgent.toLowerCase();
	if (agent.indexOf("msie") != -1 && parseInt(navigator.appVersion) == 4 && agent.indexOf("msie 5") == -1 && agent.indexOf("msie5") == -1 && agent.indexOf("win") != -1 && url.indexOf('http://') == 0) {
		winReference = window.open('about:blank', name, properties);
		
		setTimeout('if (winReference && !winReference.closed) winReference.location.replace("' + url + '")', 300);
	}
	else {
		winReference = window.open(url, name, properties);
	}

	// 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()', 200);
	
	if (openerName) self.name = openerName;
	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() {
		setRoot();
    if (top.opener && isWindowPopup(top.opener)) {
		setTimeout('top.opener.close()',150);
	}
}

// Check if a window is a popup
function isWindowPopup(win) {
	return ((win.opener) ? true : false);
}

// set the parent or grand parent window to "root"
function setRoot() {
  if(top.opener){
    root = top.opener.top;
      if(root.root){
        root = root.root;
      }
  }else{
    root = window.top;
  }
  while(isWindowPopup(root)){
      root = root.opener.top;
  }
}