/*

		Timer by Algorithm

		http://www.codingforums.com/archive/index.php/t-10531.html

	*/

	function Timer(){

		this.obj = (arguments.length)?arguments[0]:window;

		return this;

	}

	

	// The set functions should be called with:

	// - The name of the object method (as a string) (required)

	// - The millisecond delay (required)

	// - Any number of extra arguments, which will all be

	// passed to the method when it is evaluated.

	

	Timer.prototype.setInterval = function(func, msec){

		var i = Timer.getNew();

		var t = Timer.buildCall(this.obj, i, arguments);

		Timer.set[i].timer = window.setInterval(t,msec);

		return i;

	}

	Timer.prototype.setTimeout = function(func, msec){

		var i = Timer.getNew();

		Timer.buildCall(this.obj, i, arguments);

		Timer.set[i].timer = window.setTimeout("Timer.callOnce("+i+");",msec);

		return i;

	}

	

	// The clear functions should be called with

	// the return value from the equivalent set function.

	Timer.prototype.clearInterval = function(i){

		if(!Timer.set[i]) return;

		window.clearInterval(Timer.set[i].timer);

		Timer.set[i] = null;

	}

	Timer.prototype.clearTimeout = function(i){

		if(!Timer.set[i]) return;

		window.clearTimeout(Timer.set[i].timer);

		Timer.set[i] = null;

	}

	

	// Private data

	Timer.set = new Array();

	Timer.buildCall = function(obj, i, args){

		var t = "";

		Timer.set[i] = new Array();

		if(obj != window){

			Timer.set[i].obj = obj;

			t = "Timer.set["+i+"].obj.";

		}

		t += args[0]+"(";

		if(args.length > 2){

			Timer.set[i][0] = args[2];

			t += "Timer.set["+i+"][0]";

			for(var j=1; (j+2)<args.length; j++){

				Timer.set[i][j] = args[j+2];

				t += ", Timer.set["+i+"]["+j+"]";

			}

		}

		t += ");";

		Timer.set[i].call = t;

		return t;

	}

	Timer.callOnce = function(i){

		if(!Timer.set[i]) return;

		eval(Timer.set[i].call);

		Timer.set[i] = null;

	}

	Timer.getNew = function(){

		var i = 0;

		while(Timer.set[i]) i++;

		return i;

	}