i just bought a joomla template from template monster. there is photo gallery on home page which skips to photos by clicking onto them.

what i need is a self sliding photo gallery you know what i mean automatically skipping photos in preset interval. http://www.mirelmuhendislik.com/home-tr/index.php this is the homepage.

ben bunu yapmaya çalıştım

function clicker() {
document.getElementById('photo2').click();
}
setInterval("clicker()",5000);

but it didnt work. i dunno why it didnt work is it because of javascript embedding options of joomla or is it because my javascript code?? and how can i solve this problem? i'd be glad to see some suggestions please help :/