function hs() { //v9.0
  var i,p,v,obj,args=hs.arguments;
  for (i=0; i<(args.length-2); i+=3) 
  with (document) if (getElementById && ((obj=getElementById(args[i]))!=null)) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v; }
}

function changeClass(id, classz){
document.getElementById(id).className = classz;
}

function validateForm()
	{
	valid = true;
	
	if(document.form.Email_Address.value == '')
		{
		document.getElementById('errorEmail').innerHTML = 'Your email address is a required field';
		valid = false;
		}
		else
			{
			document.getElementById('errorEmail').innerHTML = '';	
			}
		
	if(document.form.Subject.value == '')
		{
		document.getElementById('errorSubject').innerHTML = 'Subject is a required field';
		valid = false;
		}
		else
			{
			document.getElementById('errorSubject').innerHTML = '';	
			}
	
	if(document.form.Message.value == '')
		{
		document.getElementById('errorMessage').innerHTML = 'Message is a required field';
		valid = false;
		}
		else
			{
			document.getElementById('errorMessage').innerHTML = '';	
			}
		
	return valid;
	}