// JScript File
var StringBuilder = Class.create({
    initialize: function(initialVal) {
        if (initialVal == null)
            this.val = "";
        else
            this.val = initialVal;
    },
    
    append: function(value) {
        this.val = this.val + value;
    },
    
    toString: function() {
        return this.val;
    },
    
    clear: function() {
        this.val = "";
    },
    
    dispose: function() {
        this.val = null;
    }
});