var ticker = new Class({  
     initialize: function(container, options) {  
         this.container = container;  
         this.options = Object.extend(options || {},{  
             frequency: 500,  
             item_frequency: 3000,  
             char_frequency: 40,  
             endBits: ['_','_']  
         });  
         this.current = 0;  
         this.currentChar = 0;  
         this.startTick();  
     },  
     startTick: function() {  
         this.container.each(function(item) {  
             item.setStyles('display: none;');  
         });  
         setTimeout(this.onTick.bind(this), this.options.frequency);  
     },  
     onTick: function() {  
         if(this.currentChar==0) {  
             if (this.current_item) {  
                 this.current_item.setStyles('display: none;');  
             }  
             this.current_item = this.container[this.current%this.container.length];  
             this.current_item.setStyles('display: inline;');  
             this.current_title = this.current_item.getFirst("a").innerHTML;  
             this.current++;  
         }  
           
         this.current_item.getFirst("a").innerHTML = this.current_title.substring(0,this.currentChar) + this.options.endBits[this.currentChar&this.options.endBits.length-1];  
         if(this.currentChar==this.current_title.length) {  
             this.current_item.getFirst("a").innerHTML = this.current_title.substring(0,this.current_title.length);  
             this.currentChar=0;  
             var t = this.options.item_frequency || 1000;  
         } else {  
             this.currentChar++;  
             var t = this.options.char_frequency || 50;  
         }  
         setTimeout(this.onTick.bind(this),t);  
     }  
 });