Validate correctness of html table syntax with javascript

[jebin]

I want to validate if a given html table syntax is correct, with respect to all colspan and rowspan definitions.http://jsfiddle.net/UkV35/My first wrong table \[code\]#wrong1\[/code\] throws an error, but \[code\]#wrong2\[/code\] does not (see fiddle). Seems that it does not support too large numbers.