Strange problem when doing a submit in the back-office in a new tab Product

[sergiorx8]

I created a module for back-office to add a new tab on the product side.

 

In the module there are several imputs and submit button to send the data.

 

The problem is that if I press the submit fast works fine but if it takes a few seconds the ajax loading the next line and no longer sends values only recharges the web.

 

Next line in the SEO section:

 

<input type="text" id="link_rewrite_1" class="form-control " name="link_rewrite_1" value="camiseta-destenida-manga-corta" onkeyup="if (isArrowKey(event)) return ;updateFriendlyURL();" onblur="updateLinkRewrite();">

 

PS: If I delete the line with the inspector of elements works well.

Edited April 9, 2015 by sergiorx8 (see edit history)