Изменить код скрипта

var cssList = [ 
        'jquery.mmodal.css', 
        'jquery.mnotify.default.css', 
        'jquery.mnotifyajax.css', 
        'mtooltip.css', 
        'screen.css', 
        'skin.css', 
        'jquery.fancybox.css', 
        'jquery.fancybox-buttons.css', 
        'flash.css', 
        'author.css' 
    ], 
    cssDisable = false, 
    tmpCss = [], 
    weakCss = '/weak-sighted.css', 
    cssCookieName = 'css_disabled'; 
 
function isCssDisabled() { 
    return cssDisable; 
} 
 
function cssAvailable(src) { 
    for (var i = 0; i < cssList.length; i++) { 
        if (src.indexOf(cssList[i]) > -1) { 
            return true; 
        } 
    } 
 
    return false; 
} 
 
function disableCss() { 
    $('link[type="text/css"]').each(function (i, el) { 
        var $el = $(el), src = $el.attr('href'); 
 
        if (cssAvailable(src)) { 
            tmpCss.push(src); 
            $el.remove(); 
        } 
    }); 
    attachCss('/weak-sighted.css', 'weak'); 
    $.cookie(cssCookieName, 1); 
    isCssDisabled = true; 
} 
 
function enableCss() { 
    $('#weak').remove(); 
    for (var i = 0; i < tmpCss.length; i++) { 
        attachCss(tmpCss[i]); 
    } 
    $.cookie(cssCookieName, 0); 
    isCssDisabled = false; 
} 
 
function attachCss(src, id) { 
    var link = document.createElement('link'); 
    link.type = 'text/css'; 
    link.href = src; 
    link.rel = 'stylesheet'; 
    if (id) { 
        link.id = id; 
    } 
    document.getElementsByTagName("head")[0].appendChild(link); 
} 
 
$(document) 
    .on('click', '#normcss', function (e) { 
        e.preventDefault(); 
 
        if (isCssDisabled) { 
            enableCss(); 
        } else { 
            disableCss(); 
        } 
 
    }); 
 
$(document).ready(function () { 
    isCssDisabled = $.cookie(cssCookieName) || false; 
    if (isCssDisabled) { 
        disableCss(); 
    } 
});