function fnValidateEmail(field) {
         invalidChars = " /:,;"
         if (field == "") {
            return false}
         for (i=0; i<invalidChars.length; i++) {
            badChar = invalidChars.charAt(i)
            if (field.indexOf(badChar,0) > -1) {
               return false}
         }
         atPos = field.indexOf("@",1)
          if (atPos == -1) {
            return false}
         if (field.indexOf("@",atPos+1) > -1) {
            return false}
         periodPos = field.indexOf(".",atPos)
         if (periodPos == -1) {
            return false}
         if (periodPos+3 > field.length)   {
            return false}
         return true}

function CheckForm()
{
	if (document.form.name.value == "")
		{alert ('You must enter your Name.');
		document.form.name.focus();
		return false;}
	if (document.form.phone.value  == "")
		{alert ('You must enter your Phone Number.');
		document.form.phone.focus();
		return false;}
	if (fnValidateEmail(document.form.email.value) == false)
        {alert("You must enter a valid email address.");
        document.form.email.focus();
        return false;}
	if (document.form.enquiry.value  == "")
		{alert ('You must enter the Nature of your Enquiry.');
		document.form.enquiry.focus();
		return false;}		
}