Multiple *Unique* Array Values (uses jQuery)

MulitpleUniqueArrayValues.js

// MULTIPLE *UNIQUE* ARRAY VALUES (uses jQuery)
// Parameter arr: array containing values
// Parameter totalNum: total number of values to get
// Returns Array
function rndArrValues(arr, totalNum){
    if ( totalNum <= 0 ){ return; }

    var theResult = [];
    var newElement;

    // if array same size or equal, return whole array
    if ( arr.length <= totalNum ){
        return arr;
    } 
    else {
        // loop through array until we have as many values as we need
        while ( theResult.length < totalNum )
        {
            newElement = arr[ Math.floor(Math.random() * arr.length) ];
            // value isn't already in our array
            if ( $.inArray(newElement, theResult) == -1 ) {
                theResult.push( newElement );
            }
        }
    }
    return theResult;
}