table.js
function camelCaseToUnderscoreMap(columns) {
    var map = {};
    for (var i = 0; i < columns.length; i++)
        map[columns[i]] = toUnderscore(columns[i]);
    return map;
}
function camelCaseToUnderscoreMap(columns) {
    var map = {};
    for (var i = 0; i < columns.length; i++)
        map[columns[i]] = toUnderscore(columns[i]);
    return map;
}
function camelCaseToUnderscoreMap ( columns ) { var map = { } ; for ( var i = 0 ; i < columns . length ; i ++ ) map [ columns [ i ] ] = toUnderscore ( columns [ i ] ) ; return map ; }
build a map that converts each camel case column name to an underscore name
build a map that converts each camel case column name to an underscore name