(function($){
	$.fn.popupWindow = function(instanceSettings){
		var myWin = null;
		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)));
					}
					if (myWin == null || myWin.closed) {
					  myWin = window.open(settings.windowURL, settings.windowName, windowFeatures+',left=' + centeredX +',top=' + centeredY);
					}
				}else if(settings.centerScreen){
					centeredY = (screen.height - settings.height)/2;
					centeredX = (screen.width - settings.width)/2;
					if (myWin == null || myWin.closed) {
					  myWin = window.open(settings.windowURL, settings.windowName, windowFeatures+',left=' + centeredX +',top=' + centeredY);
				  }
				}else{
				  if (myWin == null || myWin.closed) {
					  myWin = window.open(settings.windowURL, settings.windowName, windowFeatures+',left=' + settings.left +',top=' + settings.top);	
					}
				}
				myWin.focus();
				return false;
			});
			
		});	
	};
})(jQuery);