Making log align properly with menu link

Hi,
How can I make the logo to align parallel with the menu link? Shot: http://awesomescreenshot.com/07c4ymfvbf
However, I used this code but not fixing it;
.header {
width: 999px;
margin-left: auto;
margin-right: auto;
padding: 38px 0px;
}

.header_left a img {
float: left;
margin-right: 20px;
margin-bottom: 0px;
}

url: http://goodtidings.barniwebs.com

Regards