/**
*	Waml.Browser
*	Browser utilities
*	@author Skitsanos.com
*	@version 2.0
*/
if (!Waml) { alert('waml.core.js missing'); }
if (!Waml.Browser) { Waml.Browser = {}; }

Waml.Browser.isSafari = function() { return navigator.userAgent.toLowerCase().indexOf('safari') != -1; };
Waml.Browser.isKonq = function() { return navigator.userAgent.toLowerCase().indexOf('konqueror') != -1; };
Waml.Browser.isKhtml = function() { return Waml.Browser.is_safari || Waml.Browser.is_konq; };
Waml.Browser.isIe = function() { return navigator.userAgent.toLowerCase().indexOf("msie") != -1; };
Waml.Browser.isIe7 = function() { return navigator.userAgent.match(/msie 7/i); };
Waml.Browser.isMozilla = function() { return navigator.userAgent.toLowerCase().indexOf("gecko") != -1; };
Waml.Browser.isOpera = function() { return navigator.userAgent.match(/Opera/); };
Waml.Browser.isWebkit = function() { return (navigator.userAgent.match(/AppleWebKit/)); };
Waml.Browser.isMac = function() { return (navigator.platform.toString().match(/mac/i)); };
Waml.Browser.isChrome = function() { return navigator.userAgent.toLowerCase().indexOf('chrome') != -1; };


Waml.Browser.getViewport = function() {
    if (Waml.Browser.is_opera() || (Waml.Browser.is_ie() && !Waml.Browser.is_ie7())) {
        return [document.body.clientWidth, document.body.clientHeight];
    } else {
        return [document.documentElement.clientWidth, document.documentElement.clientHeight];
    }
};

Waml.Browser.getScroll = function() {
    var l; var t;
    if (Waml.Browser.is_webkit() || Waml.Browser.is_ie) {
        l = document.body.scrollLeft;
        t = document.body.scrollTop;
    } else {
        l = document.documentElement.scrollLeft;
        t = document.documentElement.scrollTop;
    }
    return [l, t];
};
Waml.Browser.getFreeSpace = function(x, y) {
    var scroll = Waml.Browser.getScroll();
    var port = Waml.Browser.getViewport();
    var spaceLeft = x - scroll[0];
    var spaceRight = port[0] - x + scroll[0];
    var spaceTop = y - scroll[1];
    var spaceBottom = port[1] - y + scroll[1];

    var left = (spaceLeft > spaceRight);
    var top = (spaceTop > spaceBottom);

    return [left, top];
};

Waml.Browser.Cookies = {};
Waml.Browser.Cookies.allowed = function() {
    setCookie('checkCookie', 'test', 1);
    if (getCookie('checkCookie')) {
        deleteCookie('checkCookie');
        return true;
    }

    return false;
};
Waml.Browser.Cookies.getCookie = function(name) {
    var start = document.cookie.indexOf(name + "=");
    var len = start + name.length + 1;
    if ((!start) && (name != document.cookie.substring(0, name.length))) {
        return null;
    }
    if (start == -1) return null;
    var end = document.cookie.indexOf(';', len);
    if (end == -1) end = document.cookie.length;
    return unescape(document.cookie.substring(len, end));
};
Waml.Browser.Cookies.setCookie = function(name, value, expires, options) {
    if (options === undefined) { options = {}; }
    if (expires) {
        var expires_date = new Date();
        expires_date.setDate(expires_date.getDate() + expires)
    }
    document.cookie = name + '=' + escape(value) +
      ((expires) ? ';expires=' + expires_date.toGMTString() : '') +
      ((options.path) ? ';path=' + options.path : '') +
      ((options.domain) ? ';domain=' + options.domain : '') +
      ((options.secure) ? ';secure' : '');
};

Waml.Browser.params = function() {
    var results = new RegExp('[\\?&]' + name + '=([^&#]*)').exec(document.location.href);
    if (results == null) { return undefined; }
    else { return results[1] || 0; }
};