/**
 * @projectDescription 	asolib.basicfx.js / a tiny lightweight javascript library
 * @author		Amin Ladhani / amin@as-o.ch / 2010
 * @version		0.2
 * certaines methodes de cette librairie sont reprises 
 * ou inspirees des travaux de Brian Kirchoff, de Robert Penner
 * et de diverses methodes utilisees dans la librairie Mootools
 * 
 * L'utilisation de cette librairie requiert l'autorisation de expresse l'auteur
 */
var _basicFx={};_basicFx.colors={hex2rgb:function(str){var str=str.replace(/#/,'').toUpperCase(),x=parseInt(str.substr(0,2),16),y=parseInt(str.substr(2,2),16),z=parseInt(str.substr(4,2),16);return{r:x,g:y,b:z};},rgb2hex:function(r,g,b){var hex=function(n){var data="0123456789ABCDEF";if(n==null)
return"00";n=parseInt(n);if(n==0||isNaN(n))
return"00";n=Math.round(Math.min(Math.max(0,n),255));return data.charAt((n-n%16)/16)+data.charAt(n%16);};return hex(r)+hex(g)+hex(b);},rgbStyle2rgb:function(str){var c=str.toString().replace(/[^0-9,]/g,'').split(',');return{r:parseInt(c[0]),g:parseInt(c[1]),b:parseInt(c[2])};}};_basicFx.easing={linear:function(t,b,c,d){return c*t/d+b},quadIn:function(t,b,c,d){return c*(t/=d)*t+b},quadOut:function(t,b,c,d){return-c*(t/=d)*(t-2)+b},quadInOut:function(t,b,c,d){if((t/=d/2)<1)
return c/2*t*t+b;return-c/2*((--t)*(t-2)-1)+b},cubicIn:function(t,b,c,d){return c*(t/=d)*t*t+b},cubicOut:function(t,b,c,d){return c*((t=t/d-1)*t*t+1)+b},cubicInOut:function(t,b,c,d){if((t/=d/2)<1)
return c/2*t*t*t+b;return c/2*((t-=2)*t*t+2)+b},quartIn:function(t,b,c,d){return c*(t/=d)*t*t*t+b},quartOut:function(t,b,c,d){return-c*((t=t/d-1)*t*t*t-1)+b},quartInOut:function(t,b,c,d){if((t/=d/2)<1)
return c/2*t*t*t*t+b;return-c/2*((t-=2)*t*t*t-2)+b},quintIn:function(t,b,c,d){return c*(t/=d)*t*t*t*t+b},quintOut:function(t,b,c,d){return c*((t=t/d-1)*t*t*t*t+1)+b},quintInOut:function(t,b,c,d){if((t/=d/2)<1)
return c/2*t*t*t*t*t+b;return c/2*((t-=2)*t*t*t*t+2)+b},sineIn:function(t,b,c,d){return-c*Math.cos(t/d*(Math.PI/2))+c+b},sineOut:function(t,b,c,d){return c*Math.sin(t/d*(Math.PI/2))+b},sineInOut:function(t,b,c,d){return-c/2*(Math.cos(Math.PI*t/d)-1)+b}};_main._implement(_basicFx.easing,{_each:_main._each});_basicFx.run=function(parent,element,duration,time,step,trans,cssRule,a){if(this.running)
return false;var self=this,interv=function(){return self.interval();},getColor=function(c){return c.toString().match(/rgb/)?_basicFx.colors.rgbStyle2rgb(c):_basicFx.colors.hex2rgb(c);},getInt=function(v){return parseInt(v.toString().replace(/[^0-9-]/g,''));};this.parent=parent;this.running=true;this.element=element;this.duration=duration;this.time=time;this.step=step;this.transition=trans;this.cssRule=cssRule;this.isColor=cssRule.match(/color/)?true:false;this.from=this.isColor?getColor(a[0]):getInt(a[0]);this.to=this.isColor?getColor(a[1]):getInt(a[1]);this.timer=setInterval(interv,this.step);this.set=function(now){if(this.isColor)
this.element._style(this.cssRule,'rgb('+now+')');else
this.element._style(this.cssRule,Math.round(now));};this.interval=function(){var time=_main._getTime();if(time<this.time+this.duration){if(this.isColor)
this.set(this.compute(time,'r')+','+this.compute(time,'g')+','+this.compute(time,'b'));else
this.set(this.compute(time));}else{if(this.isColor)
this.set(this.to.r+','+this.to.g+','+this.to.b);else
this.set(this.to);this.stop();}};this.compute=function(time,v){if(v)
return Math.floor(this.transition((time-this.time),this.from[v],(this.to[v]-this.from[v]),this.duration));else
return this.transition((time-this.time),this.from,(this.to-this.from),this.duration);};this.stop=function(){this.cancel();this.parent.stop();};this.cancel=function(){this.running=false;clearInterval(this.timer);};return this;};_basicFx.transition=function(element,o){this.element=typeof element==='string'?document._getById(element):element;this.fps=100;this.duration=500;for(var i in o)
this[i]=o[i];this.start=function(o){this.done=false;this.time=0;this.step=Math.round(1000/this.fps);this.time=_main._getTime()-this.time;this.trans=[];if(this.onStart&&typeof this.onStart=='function')
this.onStart();for(var i=0;i<arguments.length;i++){if(arguments[i][1]==arguments[i][2]){this.stop();return false;}else{this.trans[i]=new _basicFx.run(this,this.element,this.duration,this.time,this.step,this.transition,arguments[i][0],[arguments[i][1],arguments[i][2]]);}}
return this;};this.stop=function(){if(this.onComplete&&typeof this.onComplete=='function'&&!this.done){this.onComplete();this.done=true;}};this.cancel=function(){if(!this.trans)
return false;for(var i=0;i<this.trans.length;i++)
this.trans[i].cancel();};return this;};_basicFx.transition.prototype.transition=_basicFx.easing.quadOut;_basicFx.smoothScroll=function(element,o){_basicFx.transition.apply(this,arguments);this.srollWindow=typeof element=='object'&&(element.toString().match('Window')||element=='[object Window]')?true:false;this.element=this.srollWindow||typeof element!='string'?element:document.getElementById(element);this.set=function(now){if(this.srollWindow)
this.element.scrollTo(0,Math.round(now));else
this.element.scrollTop=Math.round(now);};};_basicFx.smoothScroll.prototype.transition=_basicFx.easing.quadOut;_basicFx.easing._each(function(trans,i){[_basicFx.transition,_basicFx.smoothScroll]._each(function(fn){fn[i]=function(element,o){fn.apply(this,arguments);};fn[i].prototype.transition=_basicFx.easing[i];})});