Don't work colspan or rowspan in trable html : I don't span a cells "cell1_1" and  "cell1_2". When I'm use  colspan="2" at #cell1_1 it don't work. My [example](https://jsfiddle.net/Erush/xcwk3d09/) 
I try use [method](http://stackoverflow.com/questions/15571556/html-colspan-rowspan?answertab=votes#tab-top) at [jsfiddler](http://jsfiddle.net/Tyriar/tAsbE/)
,but don't work tag `br` when I use rowspan. 
<br>I don't understand how working skipping cells?
<br>But can't find solution! Please help!