function verificirajEmail(form_id,email) {
   var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
   var address = document.forms[form_id].elements[email].value;
   if(reg.test(address) == false) {
	document.getElementById(email).setAttribute("class", "emailPoljeGreska");
     return false;
   } else {
	   document.getElementById(email).setAttribute("class", "emailPoljeOK");
     return true;
	   
	   }
}
function prazno(form_id,polje){
	var poljeTXT=document.forms[form_id].elements[polje].value;
	if (poljeTXT.length<3){
	document.getElementById(polje).setAttribute("class", "emailPoljeGreska");
     return false;
   } else {
	   document.getElementById(polje).setAttribute("class", "emailPoljeOK");
     return true;
	
	}
}