(function($){       
  $.fn.popupWindow = function(instanceSettings){
    
    return this.each(function(){
    
    $(this).click(function(){

    $.fn.popupWindow.defaultSettings = {
      centerBrowser:0, // center window over browser window? {1 (YES) or 0 (NO)}. overrides top and left
      centerScreen:0, // center window over entire screen? {1 (YES) or 0 (NO)}. overrides top and left
      height:500, // sets the height in pixels of the window.
      left:0, // left position when the window appears.
      location:0, // determines whether the address bar is displayed {1 (YES) or 0 (NO)}.
      menubar:0, // determines whether the menu bar is displayed {1 (YES) or 0 (NO)}.
      resizable:0, // whether the window can be resized {1 (YES) or 0 (NO)}. Can also be overloaded using resizable.
      scrollbars:0, // determines whether scrollbars appear on the window {1 (YES) or 0 (NO)}.
      status:0, // whether a status line appears at the bottom of the window {1 (YES) or 0 (NO)}.
      width:500, // sets the width in pixels of the window.
      windowName:null, // name of window set from the name attribute of the element that invokes the click
      windowURL:null, // url used for the popup
      top:0, // top position when the window appears.
      toolbar:0 // determines whether a toolbar (includes the forward and back buttons) is displayed {1 (YES) or 0 (NO)}.
    };
    
    settings = $.extend({}, $.fn.popupWindow.defaultSettings, instanceSettings || {});
    
    var windowFeatures =    'height=' + settings.height +
                ',width=' + settings.width +
                ',toolbar=' + settings.toolbar +
                ',scrollbars=' + settings.scrollbars +
                ',status=' + settings.status + 
                ',resizable=' + settings.resizable +
                ',location=' + settings.location +
                ',menuBar=' + settings.menubar;

        settings.windowName = this.name || settings.windowName;
        settings.windowURL = this.href || settings.windowURL;
        var centeredY,centeredX;
      
        if(settings.centerBrowser){
            
          if ($.browser.msie) {//hacked together for IE browsers
            centeredY = (window.screenTop - 120) + ((((document.documentElement.clientHeight + 120)/2) - (settings.height/2)));
            centeredX = window.screenLeft + ((((document.body.offsetWidth + 20)/2) - (settings.width/2)));
          }else{
            centeredY = window.screenY + (((window.outerHeight/2) - (settings.height/2)));
            centeredX = window.screenX + (((window.outerWidth/2) - (settings.width/2)));
          }
          window.open(settings.windowURL, settings.windowName, windowFeatures+',left=' + centeredX +',top=' + centeredY).focus();
        }else if(settings.centerScreen){
          centeredY = (screen.height - settings.height)/2;
          centeredX = (screen.width - settings.width)/2;
          window.open(settings.windowURL, settings.windowName, windowFeatures+',left=' + centeredX +',top=' + centeredY).focus();
        }else{
          window.open(settings.windowURL, settings.windowName, windowFeatures+',left=' + settings.left +',top=' + settings.top).focus();  
        }
        return false;
      });
      
    }); 
  };
})(jQuery);