function validateForm () {
	//check name field is filled in
	if (document.cmacform.name.value=="") {
		alert("Please enter your name");
		document.cmacform.name.focus();
		return false;
	}
	
	//check email field is filled in
	if (document.cmacform.email.value=="") {
		alert("Please enter your email address");
		document.cmacform.email.focus();
		return false;
	}
	
	// check to see if email address field is of valid syntax
	substremail = document.cmacform.email.value.split("@")
	if (substremail.length > 1)
	{
    	index = substremail[1].indexOf(".")
    	if (index == -1)
    	{
			alert("Please enter a valid email address");
    		document.cmacform.email.focus()
    		return false
    	}
   		else
    	{
      		return true
  		}
  	}
	else
	{
		alert("Please enter a valid email address");
    	document.cmacform.email.focus()
    	return false
	}
	
	//if all fields are filled in will return values
	return true;
	
}