/*
Class: bgMove [Built on MooTools framework: www.mootools.net]
Author: Martin Jezek 2009
Version: 1.0
*/  
var bgMove=new Class({Implements:Options,options:{element:"view",max:-20,delay:10,step:1,mode:"vertical"},initialize:function(options){this.setOptions(options);if($(this.options.element)){this.element=$(this.options.element);this.index=0;if(this.options.mode=="horizontal"){this.move_horizontal.periodical(this.options.delay,this);}else{this.move_vertical.periodical(this.options.delay,this);}}},move_vertical:function(){if(this.index>this.options.max){var new_position="0px "+this.index+"px";this.index=parseInt(this.index)-parseInt(this.options.step);}else{var new_position="0px 0px";this.index=0;}
this.element.setStyle("background-position",new_position);},move_horizontal:function(){if(this.index>this.options.max){var new_position=this.index+"px 0px";this.index=parseInt(this.index)-parseInt(this.options.step);}else{var new_position="0px 0px";this.index=0;}
this.element.setStyle("background-position",new_position);}});