//check form, Jan Stepanovsky, 211684525
//requied items have: class="requied"
function getElementsByClass( searchClass, domNode, tagName) {
	if (domNode == null) domNode = document;
	if (tagName == null) tagName = '*';
	var el = new Array();
	var tags = domNode.getElementsByTagName(tagName);
	var tcl = " "+searchClass+" ";
	for(i=0,j=0; i<tags.length; i++) {
		var test = " " + tags[i].className + " ";
		if (test.indexOf(tcl) != -1)
			el[j++] = tags[i];
	}
	return el;
}

function checkForm(formId){
 var req = getElementsByClass('requied');
 var ok = true;
 for(i=0; i<req.length; i++)
 	if(req[i].value == ''){
 	 ok = false;
   req[i].style.backgroundColor = '#ffcdcd';
  }else
   req[i].style.backgroundColor = '#fff';
 if(ok == true){
  document.getElementById(formId).submit();
 }
 
}
