/**
 * jQuery.fullBg
 * Copyright (c) 2010 c.bavota - http://bavotasan.com
 * Dual licensed under MIT and GPL.
 * Date: 02/23/2010
**/

(function($) {
  $.fn.fullBg = function(){
  
    var bgImg = $(this);     

   function resizeImg() {
      var imgwidth = bgImg.width();
      var imgheight = bgImg.height();
 
//      var winwidth = $(window).width();
//      var winheight = $(window).height();

      var winwidth = $('#ContentMaster').width();
      var winheight = $('#ContentMaster').height();
 
      var widthratio = winwidth / imgwidth;
      var heightratio = winheight / imgheight;
 
      var widthdiff = heightratio * imgwidth;
      var heightdiff = widthratio * imgheight;
 
      if(heightdiff>winheight) {
        bgImg.css({
          width: winwidth+'px',
          height: heightdiff+'px'
        });
      } else {
        bgImg.css({
          width: widthdiff+'px',
          height: winheight+'px'
        });		
      }
    } 
    
    resizeImg();
   
    $(window).resize(function() {
      resizeImg();
    }); 
    
  };
  
})(jQuery)