function validateForm(form)
  {
  	// Check required field
	var nameEntered = form.Name
	if ((nameEntered.value==null)||(nameEntered.value=="")){
		alert("Enter a name")
		nameEntered.focus()
		return false
	}
	var companyEntered = form.Company
	if ((companyEntered.value==null)||(companyEntered.value=="")){
		alert("Enter a company")
		companyEntered.focus()
		return false
	}
	// Check email
	var emailEntered = form.Email
	if ((emailEntered.value==null)||(emailEntered.value=="")){
		alert("Enter an email address")
		emailEntered.focus()
		return false
	}
	if (emailCheck(emailEntered.value)==false){
		emailEntered.value=""
		emailEntered.focus()
		return false
	}
	return true;
  }

  function emailCheck(str) {

	var at="@"
	var dot="."
	var lat=str.indexOf(at)
	var lstr=str.length
	var ldot=str.indexOf(dot)
	var errormessage = "Bad email address"
	if (str.indexOf(at)==-1){
	   alert(errormessage)
	   return false
	}

	if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
	   alert(errormessage)
	   return false
	}

	if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
	    alert(errormessage)
	    return false
	}

	 if (str.indexOf(at,(lat+1))!=-1){
	    alert(errormessage)
	    return false
	 }

	 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
	    alert(errormessage)
	    return false
	 }

	 if (str.indexOf(dot,(lat+2))==-1){
	    alert(errormessage)
	    return false
	 }
	
	 if (str.indexOf(" ")!=-1){
	    alert(errormessage)
	    return false
	 }

	 return true					
  }