Multiple values in a form option field

I have a php page that has a web form on it. I do a query to populate the options in a drop down box in the form. [code] <select size="1" name="customer"> <?PHP while($query_data1=mysql_fetch_row($result1)){ echo"<option value='$query_data1[0]'>$query_data1[1]</option>"; } ?> [code] $query_data1[0] is a userID number $query_data1[1] is the user's Email address So when the user selects an email addres from the drop down box, the userID is stored and later writen to a database. What I now need to do is store not only the userID but the email address as well. Is there a way using a form to store 2 values using one drop down box? So basically I want to store the userID and the Email address to a variable in the form so that both may be written to different fields in the database later. Jeff