'use strict'; 
function createDiv(test, doc){ 
return createElement(test, 'div', doc); 
} 
function createElement(test, tagName, doc){ 
if (!doc) { 
doc = document; 
} 
var element = _AN_Call_createelement('createElement', doc, tagName || 'div'); 
_AN_Call_appendchild('appendChild', doc.body, element); 
test.add_cleanup(function (){ 
element.remove(); 
} 
); 
return element; 
} 
function pxToNum(str){ 
return Number(String(str).match(/^(-?[\d.]+)px$/)[1]); 
} 
function cubicBezier(x1, y1, x2, y2){ 
function xForT(t){ 
var omt = 1 - t; 
return 3 * omt * omt * t * x1 + 3 * omt * t * t * x2 + t * t * t; 
} 
function yForT(t){ 
var omt = 1 - t; 
return 3 * omt * omt * t * y1 + 3 * omt * t * t * y2 + t * t * t; 
} 
function tForX(x){ 
var mint = 0, maxt = 1; 
for (var i = 0; 
i < 30; ++i){ 
var guesst = (mint + maxt) / 2; 
var guessx = xForT(guesst); 
if (x < guessx) { 
maxt = guesst; 
} 
 else { 
mint = guesst; 
} 
} 
return (mint + maxt) / 2; 
} 
return function bezierClosure(x){ 
if (x == 0) { 
return 0; 
} 
if (x == 1) { 
return 1; 
} 
return yForT(tForX(x)); 
} 
; 
}