Tag <button> make a page autorefresh in ie10 edge mode

Tag <button> make a page autorefresh in ie10 edge mode

Hi, sorry for my english.... I've a big problem: I used this:

<button onclick="cerca_pratiche()">CERCA</button>

function cerca_pratiche()
{
// do nothing
}

to make a simply style for commands on the page (show or hide tables).
In ie8 everything ok. In ie 10 when I click on the button start a page refresh.
I'm using jquery-ui-1.11.3/jquery-1.10.2.js

Can anyone help me? I've put lot of this button and rewrite code is a big problem (and waste lot of time :( )

Thankssss

Stefano