(function ($, undefined) {

 $(function() {
 $(".Menu>div").mouseenter( function() { 
 var j = $(this);
 var c = j.children("div");

 var tw = 960;
 
 var hl = j.position().left;
 var hw = j.outerWidth();
 var hc = hl+hw/2;
 var dw = c.outerWidth();
 var dl;

 if ((hl+dw)<tw) {
 dl=0;
 }
 else if (dw<(hl+hw)) {
 dl=hw-dw;
 }
 else {
 dl = -(dw*hl)/(960-hw)+hw/2;
 if (dl>0) { dl=0; }
 if (dl+dw<hw) { dl = hw-dw; };
 }
 c.css("left", dl + "px");
 
 });

 });

}(jQuery));