function bgpos(){
	var offset = $('#all').offset();
	var bgp = 'url(./images/bg-body.jpg) '+(offset.left - 350)+'px 0px no-repeat #354c0d';
	$('#pbody').css({"background": bgp}); 
}
	  
  $(window).bind("load", function() { bgpos();});  
  $(window).bind("resize", function() { bgpos();});