Function to do live population of HTMLs Select tag from a Table
/*
Description:
This function takes several arguments and generates
the ... HTML code fragment. A mysql_connect() is presumed
to exist already.
Arguments passed:
$dbname (required) Database name
$tblname (required) Table name
$tblkeyvarname (required) Name of table's key field
$tblkeyvaluesname (required) Name of column that describes key field (usually the
displayable value in the