YUI Grid CSS为100％宽度页面，具有自定义模板宽度

I am using Yahoo's UI Grids to structure most of my pages. One of my pages is a Google map and I need about a 400 pixel fixed left column to put map legend information into. YUI Grids however only offers 3 columns for their 100% page layouts, namely 160px, 180px and 300px.I am using Yahoo's UI Grids to structure most o