template.css
(line 1157)shift the nav bar to the right
#ja-mainnav {
bottom:36px;
height:44px;
left:40%;
position:absolute;
z-index:10;
}
(line 1122) shift the background grey bar right
#ja-header {
background:transparent url(../images/head-bg.gif) no-repeat scroll 95px 60px;
height:140px;
position:relative;
z-index:999;
}
(line 1144) expands the clickable area for the logo
h1.logo a {
background:transparent url(../images/logo.gif) no-repeat scroll 0 0;
display:block;
float:left;
height:120px;
outline-color:-moz-use-text-color;
outline-style:none;
outline-width:medium;
text-indent:-5000px;
text-transform:uppercase;
width:350px;
}
(line 1133) expand the frame of the logo
h1.logo {
font-size:300%;
height:120px;
left:0;
margin:0;
padding:0;
position:absolute;
top:10px;
width:350px;
}
lastly, upload a new logo.gif with max height 120px OR max width of 350px.
You may adjust the values in red to suit your needs