CSS 3 column liquid layout with fixed center column

Question

I want to make for my marketing site a 3 column layout that has images in the top banner.

I want to have a liquid left/right side with a fixed center. The html would

Answer 1

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CSS Only Demo

jQuery Demo(Cross Browser Compatible)

    
 
    

      
    
    
 



*{
    margin:0;
    padding:0;
}
#bannerCenter{
    background:#ffffd;
    width: 500px;
    float:left;
}
#pixelLeft{
    background:#999;
    width: calc(50% - 250px);
    float:left;
}
#pixelRight{
    background:#999;
    width: calc(50% - 250px);
    float:right;
}

#bannerCenter,#pixelLeft,#pixelRight{
    height: 400px;
}

You can use jQuery instead of using calc(50% - 250px); to make it compatible for older browsers.

$(document).ready(function() {
    $(window).on('resize', function() {
         $('#pixelLeft, #pixelRight').css('width',($('body').width()-$('#bannerCenter').width())/2);
    }).trigger('resize');      
});

Update: June 2018

Added flexbox solution for same problem.

*{
    margin:0;
    padding:0;
}
.wrap {
  display: flex;
}
#pixelLeft, #pixelRight{
  display: flex;
  flex:1;
}
#bannerCenter{
    background:#ffffd;
    min-width: 500px;
    display: flex;
    flex: 1;
}
#pixelLeft{
    background:#999;
}
#pixelRight{
    background:#999;
}
#bannerCenter,#pixelLeft,#pixelRight{
    height: 400px;
}