Hi hush,
1. Change height of the Menu bar.
Open the ja_splitmenu.css in the ja_splitmenu folder, find this css code section
#ja-splitmenu a {
float: left;
padding: 10px 30px; /* padding: (top & bottom)px (right & left)px; */
....
}
You can increase or decrease padding of top or bottom.
2. Change width of right column.
Open the template_css.css file and search this css code section.
#ja-mainbody #ja-contentwrap {
float: left;
width: 74.9%; /* decrease width of the content */
}
#ja-col2 {
float: right;
width: 24.9%; /* increase width of the right */
overflow: hidden;
}