/*! Animelt - v1.1.2 - 2013-11-16
* http://grsabreu.github.io/Animelt-Plugin
* Copyright (c) 2013 Gabriel Rubens; Licensed MIT */
(function($, undefined){
"use strict";

var rCssValue = /([#0-9.-]+)([#a-z%]+)?/ig,
	isHexColor = /#[a-f0-9]/ig,
	digits = /[0-9.]+/g,
	dTest = /[0-9]/g,
	specials = {},
	quickJ = $( [1] ); 

// TODO: Fix transform in Opera and Mozilla
if( $.browser.webkit ){
	specials.transform = "WebkitTransform";
}
else if( $.browser.mozilla ){
	specials.transform = "MozTransform";
}
else if( $.browser.opera ){
	specials.transform = "OTransform";
}
else if( $.browser.ie ){
	specials.transform = "-ms-transform";
}

$.fn.animelt = function(props,a,b,c){
	var opts = $.speed( a,b,c ),
		//No-conflict form
		$this = this;

	//Shorcut for custom animations
	if( $.isFunction(props) ){
		$({ p:0 }).animate({ p:1 },{

			step: props,

			duration: opts.duration,

			easing: opts.easing,

			complete: opts.complete

		});
		return this;
	};

	//@nodecss keeps the props of els
	var nodecss = [];

	this.each(function( el ){
		var node = this,
			//@prop keeps the old and new value of prop
			prop = { };
		$.each(props,function( key,val ){
			//Makes the cross-browser
			if( key in specials ){
				key = specials[key];
			}
			//Store the origin value
			var oldvalue = "";
			//Tries find the @oldValue in @el.style property
			if ( node.style[key] ){
				oldvalue = node.style[key];
			//If not tries find the @oldValue in computedStyle of el
			} else if ( dTest.test( $(node).css(key) ) ){
				oldvalue = $(node).css(key);
			//If it does not find in either the @oldValue takes value 0
			} else {
				oldvalue = "0";
			}
			prop[ key ] = [ oldvalue,val ];
		});
		nodecss[ el ] = prop;
	});

	//Run the animation
	$( { p:0 } ).animate({ p:1 }, {

		step: function( p ){
			$this.each(function( i,el ){
				//@props gets the props of respective el
				quickJ[0] = el;
				var props = nodecss[ i ];
				//Makes the 'magic' animation
				$.each(props,function( prop,val ){
					var indx = 0,
						//@old store the olds values in an array
						old = val[0].match( digits ) || 0;
					quickJ.css( 
						prop, 
						val[1].replace(rCssValue,function(exp,num,unit){
							if( isHexColor.test(exp) ) return exp;			
							var finalvalue = Number(old[indx]||0) + ( Number(num) - Number(old[indx]||0) ) * p;			
							indx++;
							return finalvalue + (unit || '' );
						}) 
					);
				});
			});
		},

		duration: opts.duration,

		easing: opts.easing,

		complete: opts.complete

	});

	return this;
};
})(jQuery);