Build javascript load path using a dir itself.

build-path-with-self.js

var SCRIPT_NAME = 'my_name.js';
function getScriptPath(target) {
    var list = document.getElementsByTagName("script");
    var i = list.length;
    while (i--) {
        var src = list[i].src;
        if (src) {
            var result = src.match(/^(.*)([^\/]+\.js)$/);
            if (result) {
                if (result[2] == SCRIPT_NAME) {
                    return result[1] + target;
                }
            }
        }
    }
    return null;
}