/**
* Copyright (c) 2010 Devin R. Olsen
*/
jQuery.fn.extend({zlayer:function(options){var defaults={canvas:document,confine:'',force:'push',mass:10}
var options=jQuery.extend(defaults,options);var o=options;var obj=jQuery(this);var m=o.mass;var c=o.confine;return this.each(function(){jQuery(o.canvas).mousemove(function(e){var elm=obj.offset();var x=e.pageX-elm.left-obj.width()/2;var y=e.pageY-elm.top-obj.height()/2;obj.css({top:cal(y,'y'),left:cal(x,'x')});});});function cal(a,t){a=(o.force=='pull')?(c==t)?a=0:a=a/m:(c==t)?a=0:a=-a/m;return parseInt(a);}}});