function HttpPool(size) {
		//this assumes the sarissa.js is being used

		this.objects = new Array();
		this.objectType = "XMLHttpRequest()";
		this.size = (size)?size:5;

		this.init = _httpPool_init;
		this.claimObject = _httpPool_claimObject;
		this.releaseObject = _httpPool_releaseObject;
	}
	function _httpPool_init(size) {

		var iSize = (!size)?this.size:size;
		for (var i=0; i<iSize; i++) {
			var obj = eval("new " + this.objectType);
		
			this.objects[this.objects.length] = obj;
		}

	}
	function _httpPool_claimObject() {

		if (this.objects.length==0)
			return null;
		else {
			var ob = this.objects.pop();
			return ob;
		}
		
	}
	function _httpPool_releaseObject(ob) {
		this.objects[this.objects.length] = ob;
	}