(function(a){a.fn.parallax=function(b){var b=a.extend({useHTML:true,elements:[]},b||{});a((b.useHTML)?"html":this).mousemove(function(k){var g=a(this);var d={x:Math.floor(parseInt(g.width())/2),y:Math.floor(parseInt(g.height())/2)};var l={x:(k.pageX-g.offset().left),y:(k.pageY-g.offset().top)};var h={x:(l.x-d.x),y:(l.y-d.y)};for(var j=b.elements.length-1;j>=0;j--){var c={},m,f;for(var n in b.elements[j].properties.x){f=b.elements[j].properties.x[n];m=f.initial+(h.x*f.multiplier);if("min" in f&&m<f.min){m=f.min}else{if("max" in f&&m>f.max){m=f.max}}if("invert" in f&&f.invert){m=-(m)}if(!("unit" in f)){f.unit="px"}c[n]=m+f.unit}for(var n in b.elements[j].properties.y){f=b.elements[j].properties.y[n];m=f.initial+(h.y*f.multiplier);if("min" in f&&m<f.min){m=f.min}else{if("max" in f&&m>f.max){m=f.max}}if("invert" in f&&f.invert){m=-(m)}if(!("unit" in f)){f.unit="px"}c[n]=m+f.unit}if("background-position-x" in c||"background-position-y" in c){c["background-position"]=""+(("background-position-x" in c)?c["background-position-x"]:"0px")+" "+(("background-position-y" in c)?c["background-position-y"]:"0px");delete c["background-position-x"];delete c["background-position-y"]}a(b.elements[j].selector).css(c)}})}})(jQuery);