//Window opener functions v1.0.6
// documentation: http://www.dithered.com/javascript/window/index.html
// license: http://creativecommons.org/licenses/by/1.0/
// code by Chris Nott (chris[at]dithered[dot]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) {
  // ie 4.5 and 5.0 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("msie4") != -1 || agent.indexOf("msie 5.0") != -1) ) { 
   height += (status) ? 17 : 2; 
 } 
 // 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);
 return reference;
}
// Open a window at the center of the screen
function openCenteredWindow(url, name, width, height, status,scrollbars, moreProperties, openerName) { 
 var x, y = 0;
 if (screen) {
   x= (screen.availWidth - width) / 2;
   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 parent window
function openCenteredOnOpenerWindow(url, name, width, height, status,scrollbars, moreProperties, openerName) {
 var centerX = 0;
 var centerY= 0;
 if (window.screenX != null && window.outerWidth) {
   centerX= window.screenX + (window.outerWidth / 2);
   centerY = window.screenY +(window.outerHeight / 2);
 } else if (window.screenLeft) { 
   if(document.documentElement) { 
     centerX = window.screenLeft +(document.documentElement.offsetWidth / 2);
     centerY = window.screenTop+ (document.documentElement.offsetHeight / 2);
   } else if (document.body && document.body.offsetWidth) { 
     centerX = window.screenLeft +(document.body.offsetWidth / 2);
     centerY = window.screenTop +(document.body.offsetHeight / 2);
   }
 } 
 if (centerX == 0) {
   openCenteredWindow(url, name, width, height, status, scrollbars,moreProperties, openerName);
 }
 var x = parseInt(centerX - (width / 2));
 var y = parseInt(centerY - (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 full-screen window (different from IE's fullscreen option)
function openMaxedWindow(url, name, scrollbars, openerName) {
 var x, y= 0;
 var width = 600;
 var height = 800;
 if (screen) { 
   if(screen.availLeft) {
     x = screen.availLeft;
     y = screen.availTop;
   } 
   width= screen.availWidth - 6;
   height = screen.availHeight - 29;
 } 
 var reference = openPositionedWindow(url, name, width, height, x, y, 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 allowsfocussing the window
function openFullChromeWindow(url, name, openerName) {
  return openWindow(url, name,'directories,location,menubar,resizable,scrollbars,status,toolbar');
}
// Open a sized full-chrome (all GUI elements) window 
function openSizedFullChromeWindow(url, name, width, height, openerName) {
  return openCenteredWindow(url, name, width, height, true, true,'directories,location,menubar,resizable,toolbar', openerName)
}
// Core utility function that actually creates the window and givesfocus to it
function openWindow(url, name, properties, openerName) { 
// ie4.x pccan't give focus to windows containing documents from a differentdomain 
// in this case, initially load a local interstisial page toallow 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 likegiving focus immediately (to new window in 4.5 on mac; to existing onesin 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 adialog
function closeDialog(dialog) { 
  if (dialog && dialog.closed !=true) dialog.close();
}
// Close parent popup
// Call from onload event handler of any page that could be createdfrom 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);
}