//!!! This field is easy solution function. It can't apply to all places !!!
function ChangeMandatory() { 
	var frm = document.form1;
	var arrMandatoryFields = Array("EMail","DayPhone");
	var selectedField = arrMandatoryFields[frm.ReachYou.selectedIndex];
	frm.AdditionalRequiredFields.value = selectedField;
	for (var i=0;i<arrMandatoryFields.length;i++) {
		getObject("mandatory_"+arrMandatoryFields[i]).style.visibility = "hidden";
	}
	getObject("mandatory_"+selectedField).style.visibility = "visible";
}
//------------------------------------------------
//	Get Object for usage
//------------------------------------------------
function getObject(id){
	if (document.getElementById){
	   obj = document.getElementById(id);
	}
	else if (document.all){
	   obj = document.all[id];
	}
	else if (document.layers){
		if (document.layers[id]){
			obj = document.layers[id];
		}
	}
	return obj;
}