Return a matching prefix from either an array or object literal. If non match return false.

JS prefix generator

function getPrefix(prefixes) {
    var div = document.createElement('div');
    // Check to see if we are dealing with an array.
    if(Object.prototype.toString.call(prefixes) === '[object Array]') {
        var max = prefixes.length;
        while(max--) {
            if(prefixes[max] in div.style) {
                return prefixes[max];
            }
        }
    }
    // Else we'll assume it is an object.
    else {
        for(prefix in prefixes) {
            if(prefix in div.style) {
                return prefixes[prefix];
            }
        }
    }
    return false;
};