// usage: log('inside coolFunc', this, arguments);
// paulirish.com/2009/log-a-lightweight-wrapper-for-consolelog/
window.log = function(){
  log.history = log.history || [];   // store logs to an array for reference
  log.history.push(arguments);
  if(this.console) {
    arguments.callee = arguments.callee.caller;
    var newarr = [].slice.call(arguments);
    (typeof console.log === 'object' ? log.apply.call(console.log, console, newarr) : console.log.apply(console, newarr));
  }
};

// make it safe to use console.log always
(function(b){function c(){}for(var d="assert,count,debug,dir,dirxml,error,exception,group,groupCollapsed,groupEnd,info,log,timeStamp,profile,profileEnd,time,timeEnd,trace,warn".split(","),a;a=d.pop();){b[a]=b[a]||c}})((function(){try
{console.log();return window.console;}catch(err){return window.console={};}})());


// place any jQuery/helper plugins in here, instead of separate, slower script files.

$(document).ready(function() {
	function startScrolling(scroller_obj, velocity, start_from){
		//bind animation to the children inside the scroller element
		scroller_obj.children().bind('marquee', function(event,c) {
			//text to scroll
			var ob = $(this);
			//scroller width
			var sw = parseInt(ob.parent().width());
			//text width
			var tw = parseInt(ob.width());
			//text left position relative to the offset parent
			var tl = parseInt(ob.position().left);
			//velocity converted to calculate duration
			var v  = velocity>0 && velocity<100 ? (100-velocity)*100 : 5000;
			//same velocity for different text's length in relation with duration
			var dr = (v*tw/sw)+v;
			//is it scrolling from right or left?
			switch(start_from){
			case 'right':
				//is it the first time?
				if(typeof c == 'undefined'){
					//if yes, start from the absolute right
					ob.css({ left: sw });
					sw = -tw;
				}else{
					//else calculate destination position
					sw = tl - (tw + sw);
				};
				break;
			default:
				if(typeof c == 'undefined'){
					//start from the absolute left
					ob.css({ left: -tw });
				}else{
					//else calculate destination position
					sw += tl + tw;
				};
			}
			//attach animation to scroller element and start it by a trigger
			ob.animate(	{left:sw},
						{	duration:dr,
							easing:'linear',
							complete:function(){ob.trigger('marquee');},
							step:function(){
								//check if scroller limits are reached
								if(start_from == 'right'){
									if(parseInt(ob.position().left) < -parseInt(ob.width())){
										//we need to stop and restart animation
										ob.stop();
										ob.trigger('marquee');
									};
								}else{
									if(parseInt(ob.position().left) > parseInt(ob.parent().width())){
										ob.stop();
										ob.trigger('marquee');
									};
								};
							}
						});
		}).trigger('marquee');
		//pause scrolling animation on mouse over
		scroller_obj.mouseover(function(){
			$(this).children().stop();
		});
		//resume scrolling animation on mouse out
		scroller_obj.mouseout(function(){
			$(this).children().trigger('marquee',['resume']);
		});
	};


	$('.scroller').css("cursor","pointer");

	//settings to pass to function
	var scroller			= $('.scroller');	// element(s) to scroll
	var scrolling_velocity 	= 1; 				// 1-99
	var scrolling_from 		= 'right';			// 'right' or 'left'

	//call the function and start to scroll..
	startScrolling(scroller, scrolling_velocity, scrolling_from);
});