jQuery.fn.popupWindow = function(instanceSettings)
{

    $.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;

};