//class is in
var Typewriter = new Class({
	
	//implements
	Implements: [Options],

	//options
	options: {
		container: $$('body')[0],
		messages: '',
		currentmsg: -1,
		message: '',
		delay: 150,
		cursor: 0,
		variance: 0,
		backChar: '|',
		backDelay: 30
	},
	
	//initialization
	initialize: function(options) {
		//set options
		this.setOptions(options);
	},
	
	next: function() {
  	  this.options.currentmsg++;
  	  this.options.message = this.options.messages[this.options.currentmsg];
  	  this.start();
	},
	
	//start the Typewriter
	start: function() {
		
		//for every letter
		for(x = 0; x < this.options.message.length; x++)
		{
			var pace = (this.options.delay * x) + $random(0,this.options.variance);
			var current = this.options.message.charAt(x);
			
			//spit out the letter
			if(current != this.options.backChar)
			{
				var go = this.setLetter.delay(pace,this);
			}
			else
			{
				var go = this.deleteLetter.delay(pace + this.options.backDelay,this);
			}
			
		}
		
		// if (this.options.currentmsg + 1 < this.options.messages.length) this.next.delay(100);
	},
	
	//place the newest letter in the container
	setLetter: function() {
		
		this.options.container.set('html',this.options.container.get('html') + '' + this.options.message.charAt(this.options.cursor));
		
		//increment cursor
		this.options.cursor++;
	},
	
	//deletes a letters -- goes backward
	deleteLetter: function() {
		
		this.options.container.set('html',this.options.container.get('html').substr(0,this.options.container.get('html').length - 1));
		
		//increment cursor
		this.options.cursor++;
	}
	
});