To Solve Superfish Drop Down menu mouseover - not working

Project Description:
Main Menu cant mouseover on 2nd level of menu dropdown

Understand is the superfish dropdown need to work on

Looking for experienced programmer on this issue

Code :

/* main nav menu superfish styles */
#nav li.sfHover a.sf-with-ul { color:#555555; background:#fff;text-shadow:0 1px 0 #fff; z-index:999; -khtml-border-radius: 3px; -moz-border-radius: 3px; -webkit-border-radius: 3px; border-radius: 3px;}
ul#nav li.sfHover div { display: block;}
#nav li a.sf-with-ul {padding-right:20px; }
#nav li ul li a.sf-with-ul {padding-right:12px; }
#nav .sf-sub-indicator {background:url(images/arrow-superfish.png) no-repeat scroll 0 0 transparent;display:block;height:10px;overflow:hidden;position:absolute;right:0.4em;text-indent:-999em;top:0.9em;width:10px;}
#nav li ul .sf-sub-indicator {background:url(images/arrow-superfish-right.png) no-repeat;overflow:hidden;right:0;}
#nav li ul li a.sf-with-ul { }
#nav li:hover ul ul, #nav li.sfhover ul ul,
#nav li:hover ul ul ul, #nav li.sfhover ul ul ul,
#nav li:hover ul ul ul ul, #nav li.sfhover ul ul ul ul { left:-999em; }
#nav li:hover ul, #nav li.sfhover ul,
#nav li li:hover ul, #nav li li.sfhover ul,
#nav li li li:hover ul, #nav li li li.sfhover ul,
#nav li li li li:hover ul, #nav li li li li.sfhover ul { left:auto; }