/* javascript utilities used throughout site */

//Specify affected tags. Add or remove from list:
var tgs = new Array('div', 'td', 'tr');

//Specify spectrum of different font sizes:
var szs = new Array('xx-small', 'x-small', 'small', 'medium', 'large', 'x-large', 'xx-large');
var startSz = 2;



function FireDefaultButton(event, target) {

    // srcElement is for IE
    var element = event.target || event.srcElement;

    if (13 == event.keyCode && !(element && "textarea" == element.tagName.toLowerCase())) {
        var defaultButton;
        defaultButton = document.getElementById(target);

        if (defaultButton && "undefined" != typeof defaultButton.click) {
            defaultButton.click();
            event.cancelBubble = true;
            if (event.stopPropagation)
                event.stopPropagation();
            return false;
        }
    }
    return true;
}

// font-sizer
function ts(trgt, inc) {
    if (!document.getElementById) return
    var d = document, cEl = null, sz = startSz, i, j, cTags;

    sz += inc;
    if (sz < 0) sz = 0;
    if (sz > 6) sz = 6;
    startSz = sz;

    if (!(cEl = d.getElementById(trgt))) cEl = d.getElementsByTagName(trgt)[0];

    cEl.style.fontSize = szs[sz];

    for (i = 0; i < tgs.length; i++) {
        cTags = cEl.getElementsByTagName(tgs[i]);
        for (j = 0; j < cTags.length; j++) cTags[j].style.fontSize = szs[sz];
    }
}

jQuery.fn.highlight = function(pat) {
    function innerHighlight(node, pat) {
        var skip = 0;
        if (node.nodeType == 3) {
            var pos = node.data.toUpperCase().indexOf(pat);
            if (pos >= 0) {
                var spannode = document.createElement('span');
                spannode.className = 'highlight';
                var middlebit = node.splitText(pos);
                var endbit = middlebit.splitText(pat.length);
                var middleclone = middlebit.cloneNode(true);
                spannode.appendChild(middleclone);
                middlebit.parentNode.replaceChild(spannode, middlebit);
                skip = 1;
            }
        }
        else if (node.nodeType == 1 && node.childNodes && !/(script|style)/i.test(node.tagName)) {
            for (var i = 0; i < node.childNodes.length; ++i) {
                i += innerHighlight(node.childNodes[i], pat);
            }
        }
        return skip;
    }
    return this.each(function() {
        innerHighlight(this, pat.toUpperCase());
    });
};

jQuery.fn.removeHighlight = function() {
    return this.find("span.highlight").each(function() {
        this.parentNode.firstChild.nodeName;
        with (this.parentNode) {
            replaceChild(this.firstChild, this);
            normalize();
        }
    }).end();
};

jQuery.cookie = function(name, value, options) { if (typeof value != 'undefined') { options = options || {}; if (value === null) { value = ''; options.expires = -1 } var expires = ''; if (options.expires && (typeof options.expires == 'number' || options.expires.toUTCString)) { var date; if (typeof options.expires == 'number') { date = new Date(); date.setTime(date.getTime() + (options.expires * 24 * 60 * 60 * 1000)) } else { date = options.expires } expires = '; expires=' + date.toUTCString() } var path = options.path ? '; path=' + (options.path) : ''; var domain = options.domain ? '; domain=' + (options.domain) : ''; var secure = options.secure ? '; secure' : ''; document.cookie = [name, '=', encodeURIComponent(value), expires, path, domain, secure].join('') } else { var cookieValue = null; if (document.cookie && document.cookie != '') { var cookies = document.cookie.split(';'); for (var i = 0; i < cookies.length; i++) { var cookie = jQuery.trim(cookies[i]); if (cookie.substring(0, name.length + 1) == (name + '=')) { cookieValue = decodeURIComponent(cookie.substring(name.length + 1)); break } } } return cookieValue } };