//nemTicker.js
//2008 Paul Graves paul.graves@nemisys.uk.com
//Nemisys ticker widget

//nemTicker class
var nemTicker = new Class({
    initialize: function(el){
        this.ticker  =el;
        this.tickerContent = el.getElement(".nemTickerContent");
        
        if(this.ticker.getStyle("height").toInt()<this.tickerContent.getStyle("height").toInt()){
            this.pause =false;
            this.ticker.addEvent('mouseover',(function(){this.pause=true;}).bind(this));
            this.ticker.addEvent('mouseout',(function(){this.pause=false;}).bind(this));
            var scrollerWidth=0;
            var scrollerHeight=0;
            this.tickerContent.getElements('div').each((function(el){
                                                                        if(this.ticker.hasClass('nemHorizontal')){
                                                                            el.setStyle('float','left');
                                                                        }
                                                                        scrollerWidth+=el.getSize().x+el.getStyle('margin-right').toInt()+el.getStyle('margin-left').toInt();
                                                                        scrollerHeight+=el.getSize().y+el.getStyle('margin-top').toInt()+el.getStyle('margin-bottom').toInt();
                                                                    }).bind(this));
            if(this.ticker.hasClass('nemHorizontal')){
                this.scrollY = 0;
                this.scrollX = 1;
                this.tickerContent.setStyle('width',scrollerWidth*2);
            }else{
                this.scrollY = 1;
                this.scrollX = 0;
                this.tickerContent.setStyle('height',scrollerHeight);
            }                                                        
            this.tickerContent2 = this.tickerContent.clone();
            this.ticker.grab(this.tickerContent2,'bottom');
            
            this.scrollTicker();
        }
    },
    scrollTicker:function(current){    
         if(!this.pause){
            this.ticker.scrollTop +=this.scrollY;
            this.ticker.scrollLeft +=this.scrollX;
         }
         if(this.ticker.scrollTop>this.tickerContent.getStyle("height").toInt()){
            this.ticker.scrollTop=0;
         }
         if(this.ticker.scrollLeft*2>this.tickerContent.getStyle("width").toInt()){
            this.ticker.scrollLeft=0;
         }       
         (function(){this.scrollTicker();}).delay(60,this);
    }
});