function expand() {
var el = document.getElementById('xpander');
var el2 = document.getElementById('xpand');
if ( el.style.height != '700px' ) {
el.style.height = '700px';
el.style.display='block';
el2.innerHTML = "<a href=\"javascript:expand()\">Zatvori formular za prijavljivanje</a>"
}
else {
el.style.height = '0px';
el.style.display='none';
el2.innerHTML = "<a href=\"javascript:expand()\">Otvori formular za prijavljivanje</a>"
}
}