function checkform ( form ) {//open fuction checkform
  
  if (form.name.value == "") {//open if 1
    alert( "Please enter enter your Name." );
    form.name.focus();
	return false ;
  }//end if 1

 else if (form.email.value == "") {//open if 2
	 alert( "A valid E-mail address is necassary." );
	 form.email.focus();
	 return false ;
 }//end if 2
 
else if ((form.email.value.indexOf ('@',0) == -1 || form.email.value.indexOf ('.',0) == -1) && form.email.value != "")
  {
    alert( "Please check to make sure that your e-mail address is in the proper format.\n(e.g. username@destination.com)");
	form.email.focus();
	return false;
  } 

 
 return true;

 }//end functon checkform