function validateForm(thisform) {
  with(thisform)
  {
   if (company.value == '') {alert (company_msg); company.focus(); return false;}
   if (contact_person.value == '') {alert (contact_person_msg); contact_person.focus(); return false;}
   if (phone.value == '') {alert (phone_msg); phone.focus(); return false;}
   if (validateEmail(email.value)==false) {alert (email_msg); email.focus(); return false;}
   if (msg_content.value == '') {alert (enter_msg); msg_content.focus(); return false;}
  }
 }

function validateEmail(sText){
	var IsNumber
	var Char;
	var et = sText.indexOf('@');
	var dot = sText.indexOf('.');
	if ((et==-1) || (dot==-1)){
		IsNumber=false;
	}else IsNumber=true;	
	
	if ((et < 1) || (sText.indexOf('.',et)==-1) || (sText.indexOf('.',et) < (et+2)) || (sText.indexOf('.',et)+1 == sText.length)){
		IsNumber=false;
	} else IsNumber=true;

	return IsNumber;
	
}

function setClass (id) {
	var tree = document.getElementById(id);
	var lists = [ tree ];     
	for (var i = 0; i < tree.getElementsByTagName("ul").length; i++)
	lists[lists.length] = tree.getElementsByTagName("ul")[i];
	for (var i = 0; i < lists.length; i++) {
	var item = lists[i].lastChild;     	 
	while (!item.tagName || item.tagName.toLowerCase() != "li")
	item = item.previousSibling;
	item.className += " last";
	}
};