/**
* Fullscreenr - lightweight full screen background jquery plugin
* By Jan Schneiders
* Version 1.0
* www.nanotux.com
**/
(function($){
 $.fn.fullscreenr = function(options) {
 if(options.height === undefined) alert('Please supply the background image height, default values will now be used. These may be very inaccurate.');
 if(options.width === undefined) alert('Please supply the background image width, default values will now be used. These may be very inaccurate.');
 if(options.bgID === undefined) alert('Please supply the background image ID, default #bgimg will now be used.');
 var defaults = { width: 1280, height: 1024, bgID: 'bgimg' };
 var options = $.extend({}, defaults, options);
 $(document).ready(function() { $(options.bgID).fullscreenrResizer(options); });
 $(window).bind("resize", function() { $(options.bgID).fullscreenrResizer(options); });
 return this;
 };
 $.fn.fullscreenrResizer = function(options) {
 // Set bg size
 var ratio = options.height / options.width;
 // Get browser window size
 var browserwidth = $(window).width();
 var browserheight = $(window).height();
 // Scale the image
 if ((browserheight/browserwidth) > ratio){
 $(this).height(browserheight);
 $(this).width(browserheight / ratio);
 } else {
 $(this).width(browserwidth);
 $(this).height(browserwidth * ratio);
 }
 // Center the image
 $(this).css('left', (browserwidth - $(this).width())/2);
 $(this).css('top', (browserheight - $(this).height())/2);
 return this;
 };
})(jQuery);