function StringBuffer() {
	this.value = new Array();
}

StringBuffer.prototype.toString = function() {
	return this.value.join("");
}

StringBuffer.prototype.append = function(string) {
	return this.value.push(string);
}

StringBuffer.prototype.delLast = function() {
	if (this.value.length) 	{
		delete this.value[this.value.length-1]
	}
}

StringBuffer.prototype.getLength = function() {
	return this.value.length; //Returns string length
}

StringBuffer.prototype.clean = function() {
	this.value.length = 0;
}