var brow, docprop;
if (window.opera) {brow='op'; docprop='getElementById';}
else if (document.all) {brow='ie'; docprop='all';}
else if (document.getElementById) {brow='ff'; docprop='getElementById';}

var tekuci_menu;

function otvdiv(xx) {
if (!tekuci_menu) {tekuci_menu=0;}
if (tekuci_menu!=0) {
	eval('document.'+docprop+'("menu_'+tekuci_menu+'").style.display="none";')
}
eval('document.'+docprop+'("menu_'+xx+'").style.display="block";')
tekuci_menu=xx;
}

function otv(xx,yy,zz) {
new_prozor = window.open(xx,"w22","borders=0,toolbar=0,directories=0,location=0,status=0,menubar=0,scrollbars=no,resizable=yes,left=100,top=100,width="+yy+",height="+zz);	
new_prozor.focus();
}

function prov_pitanja(forma) { 
if (forma.tekst.value == "") {alert("Unesite tekst upita!");forma.tekst.focus();return false;}
if (forma.email.value == "" || forma.email.value == "@") {alert("Unesite svoju email adresu!");forma.email.focus();return false;}
return true;
}