Submenu Issues on Horizontal Nav UL

[richard_j_green]

I've just started using a Horizontal Navbar using a DD template.
All going well except for the placement and size of the submenus.

Currently the CSS is as follows:

.jqueryslidemenu{
	background-image:url("navback.png");
	background-repeat:no-repeat;
	background-color:transparent;
	font-size:10pt;
	height:2.8em;
	width: 100%;
	margin-top:10px;
	z-index:1000;
}

.jqueryslidemenu ul{
	margin: 0;
	list-style-type: none;
	color:#ffffff;
}

/*Top level list items*/
.jqueryslidemenu ul li{
	position: relative;
	display: inline;
	float: left;
	padding-right:25px;
}

/*Top level menu link items style*/
.jqueryslidemenu ul li a{
	display: block;
	color: white;
	margin-top:10px;
	padding-left:0px;
	padding-right:20px;
	padding-bottom:0px;
	border-right: 1px solid #778;
	color: #2d2b2b;
	text-decoration: none;
}

* html .jqueryslidemenu ul li a{ /*IE6 hack to get sub menu links to behave correctly*/
	display: inline-block;
}

.jqueryslidemenu ul li a:link, .jqueryslidemenu ul li a:visited{
	color: white;
}

.jqueryslidemenu ul li a:hover{
	color:#74a6df;
}
	
	
/*1st sub level menu*/

.jqueryslidemenu ul li ul{
	background-color:#4078bb;
	position: absolute;
	left: 0;
	display: block;
	padding-top:2px;
	padding-bottom:2px;
}

/*Sub level menu list items (undo style from Top level List Items)*/
.jqueryslidemenu ul li ul li{
	display: list-item;
	float: left;
}

/*All subsequent sub menu levels vertical offset after 1st level sub menu */
.jqueryslidemenu ul li ul li ul{
	top: 0;
}

/* Sub level menu links style */
.jqueryslidemenu ul li ul li a{
	width: 175px; /*width of sub menus*/
	padding-top: 2px;
	padding-left:0px;
	padding-right:5px;
	padding-bottom:2px;
	margin: 0;
	border-top:#4078bb 1px solid;
	border-right:4078bb 1px solid;
}

.jqueryslidemenu ul li ul li a:hover{ /*sub menus hover style*/
	color: #74a6df;
}

/* ######### CSS classes applied to down and right arrow images  ######### */

.downarrowclass{
	position:absolute;
	top:12px;
	padding-left:3px;
}

.rightarrowclass{
	position:absolute;
	top:1px;
	padding-left:10px;
}

The problem I have is that something is adding an inline style of display: none; visibility: visible; top: 27px; to the submenus. I tried to add top: 35px !important as a CSS style to correct it, but doing so causes the submenus to flicker.

Additionally, the submenus are extremely wide and I can't figure out why. The submenu should only be as wide as the grey border.

Any help is really welcome as I'm stumped.