player/js/utils/common.js

var subframeEnabled = false;
var supportsPath2D = typeof Path2D === 'function';
var cachedColors = {};
var body;

function styleDiv(element){
    element.style.position = 'absolute';
    element.style.top = 0;
    element.style.left = 0;
    element.style.display = 'block';
    element.style.verticalAlign = 'top';
    element.style.backfaceVisibility  = element.style.webkitBackfaceVisibility = 'hidden';
    //element.style.transformStyle = element.style.webkitTransformStyle = "preserve-3d";
    styleUnselectableDiv(element);
}

function styleUnselectableDiv(element){
    element.style.userSelect = 'none';
    element.style.MozUserSelect = 'none';
    element.style.webkitUserSelect = 'none';
    element.style.oUserSelect = 'none';

}

function randomString(length, chars){
    if(chars === undefined){
        chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890';
    }
    var i;
    var result = '';
    for (i = length; i > 0; --i) result += chars[Math.round(Math.random() * (chars.length - 1))];
    return result;
}

function componentToHex(c) {
    var hex = c.toString(16);
    return hex.length == 1 ? '0' + hex : hex;
}

function rgbToHex(r, g, b) {
    return '#' + componentToHex(r) + componentToHex(g) + componentToHex(b);
}

function fillToRgba(hex,alpha){
    if(!cachedColors[hex]){
        var result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
        cachedColors[hex] = parseInt(result[1], 16)+','+parseInt(result[2], 16)+','+parseInt(result[3], 16);
    }
    return 'rgba('+cachedColors[hex]+','+alpha+')';
}