html - Dynamic width in table column for webkit -

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i want create looking separator web app:

enter image description here

here code: http://jsfiddle.net/sauvk/

it works fine firefox (v4) chrome (v10) shows middle column. when set width of left , right column manually works too, want them fill space left. ideas?

the left , right cells collapsing. adding content give them width, adding padding in css: jsfiddle.net/sauvk/1/

edit: why not set colspan=3?


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