// $Id: drupal.js,v 1.29.2.1 2007/07/15 23:07:06 drumm Exp $

var Drupal = Drupal || {};

Drupal.jsEnabled = document.getElementsByTagName && document.createElement && document.createTextNode && document.documentElement && document.getElementById;

Drupal.extend = function(obj) {
for (var i in obj) {
if (this[i]) {
Drupal.extend.apply(this[i], [obj[i]]);
}
else {
this[i] = obj[i];
}
}
};

Drupal.redirectFormButton = function (uri, button, handler) {
// Trap the button
button.onmouseover = button.onfocus = function() {
button.onclick = function() {
// Create target iframe
Drupal.createIframe();

// Prepare variables for use in anonymous function.
var button = this;
var action = button.form.action;
var target = button.form.target;

// Redirect form submission to iframe
this.form.action = uri;
this.form.target = 'redirect-target';

handler.onsubmit();

// Set iframe handler for later
window.iframeHandler = function () {
var iframe = $('#redirect-target').get(0);
// Restore form submission
button.form.action = action;
button.form.target = target;

// Get response from iframe body
try {
response = (iframe.contentWindow || iframe.contentDocument || iframe).document.body.innerHTML;
// Firefox 1.0.x hack: Remove (corrupted) control characters
response = response.replace(/[\f\n\r\t]/g, ' ');
if (window.opera) {
// Opera-hack: it returns innerHTML sanitized.
response = response.replace(/"/g, '"');
}
}
catch (e) {
response = null;
}

response = Drupal.parseJson(response);
// Check response code
if (response.status == 0) {
handler.onerror(response.data);
return;
}
handler.oncomplete(response.data);

return true;
}

return true;
}
}
button.onmouseout = button.onblur = function() {
button.onclick = null;
}
};

Drupal.absolutePosition = function (el) {
var sLeft = 0, sTop = 0;
var isDiv = /^div$/i.test(el.tagName);
if (isDiv && el.scrollLeft) {
sLeft = el.scrollLeft;
}
if (isDiv && el.scrollTop) {
sTop = el.scrollTop;
}
var r = { x: el.offsetLeft - sLeft, y: el.offsetTop - sTop };
if (el.offsetParent) {
var tmp = Drupal.absolutePosition(el.offsetParent);
r.x += tmp.x;
r.y += tmp.y;
}
return r;
};

Drupal.dimensions = function (el) {
return { width: el.offsetWidth, height: el.offsetHeight };
};

Drupal.mousePosition = function(e) {
return { x: e.clientX + document.documentElement.scrollLeft, y: e.clientY + document.documentElement.scrollTop };
};

Drupal.parseJson = function (data) {
if ((data.substring(0, 1) != '{') && (data.substring(0, 1) != '[')) {
return { status: 0, data: data.length ? data : 'Unspecified error' };
}
return eval('(' + data + ');');
};

Drupal.createIframe = function () {
if ($('#redirect-holder').size()) {
return;
}
// Note: some browsers require the literal name/id attributes on the tag,
// some want them set through JS. We do both.
window.iframeHandler = function () {};
var div = document.createElement('div');
div.id = 'redirect-holder';
$(div).html('<iframe name="redirect-target" id="redirect-target" class="redirect" onload="window.iframeHandler();"></iframe>');
var iframe = div.firstChild;
$(iframe)
.attr({
name: 'redirect-target',
id: 'redirect-target'
})
.css({
position: 'absolute',
height: '1px',
width: '1px',
visibility: 'hidden'
});
$('body').append(div);
};

Drupal.deleteIframe = function () {
$('#redirect-holder').remove();
};

Drupal.freezeHeight = function () {
Drupal.unfreezeHeight();
var div = document.createElement('div');
$(div).css({
position: 'absolute',
top: '0px',
left: '0px',
width: '1px',
height: $('body').css('height')
}).attr('id', 'freeze-height');
$('body').append(div);
};

Drupal.unfreezeHeight = function () {
$('#freeze-height').remove();
};

Drupal.encodeURIComponent = function (item, uri) {
uri = uri || location.href;
item = encodeURIComponent(item).replace(/%2F/g, '/');
return (uri.indexOf('?q=') != -1) ? item : item.replace(/%26/g, '%2526').replace(/%23/g, '%2523').replace(/\/\//g, '/%252F');
};

if (Drupal.jsEnabled) {
document.documentElement.className = 'js';
}