/**
 * Interface Elements for jQuery
 * FX
 * 
 * http://interface.eyecon.ro
 * 
 * Copyright (c) 2006 Stefan Petre
 * Dual licensed under the MIT (MIT-LICENSE.txt) 
 * and GPL (GPL-LICENSE.txt) licenses.
 *   
 *
 */

/**
 * Validates elements that can be animated
 */
jQuery.fxCheckTag = function(e)
{
	if (/^tr$|^td$|^tbody$|^caption$|^thead$|^tfoot$|^col$|^colgroup$|^th$|^body$|^header$|^script$|^frame$|^frameset$|^option$|^optgroup$|^meta$/i.test(e.nodeName) )
		return false;
	else 
		return true;
};

/**
 * Destroy the wrapper used for some animations
 */
jQuery.fx.destroyWrapper = function(e, old)
{
	var c = e.firstChild;
	var cs = c.style;
	cs.position = old.position;
	cs.marginTop = old.margins.t;
	cs.marginLeft = old.margins.l;
	cs.marginBottom = old.margins.b;
	cs.marginRight = old.margins.r;
	cs.top = old.top + 'px';
	cs.left = old.left + 'px';
	e.parentNode.insertBefore(c, e);
	e.parentNode.removeChild(e);
};

/**
 * Builds a wrapper used for some animations
 */
jQuery.fx.buildWrapper = function(e)
{
	if (!jQuery.fxCheckTag(e))
		return false;
	var t = jQuery(e);
	var es = e.style;
	var restoreStyle = false;
	var oldStyle = {};
	oldStyle.position = t.css('position');
	
	if (t.css('display') == 'none') {
		oldVisibility = t.css('visibility');
		es.visibility = 'hidden';
		es.display = '';
		restoreStyle = true;
	}
	oldStyle.sizes = jQuery.iUtil.getSize(e);
	oldStyle.margins = jQuery.iUtil.getMargins(e);
	
	var oldFloat = e.currentStyle ? e.currentStyle.styleFloat : t.css('float');
	oldStyle.top = parseInt(t.css('top'))||0;
	oldStyle.left = parseInt(t.css('left'))||0;
	var wid = 'w_' + parseInt(Math.random() * 10000);
	var wr = document.createElement(/^img$|^br$|^input$|^hr$|^select$|^textarea$|^object$|^iframe$|^button$|^form$|^table$|^ul$|^dl$|^ol$/i.test(e.nodeName) ? 'div' : e.nodeName);
	jQuery.attr(wr,'id', wid);
	wr.className = 'fxWrapper';
	var wrs = wr.style;
	var top = 0;
	var left = 0;
	if (oldStyle.position == 'relative' || oldStyle.position == 'absolute'){
		top = oldStyle.top;
		left = oldStyle.left;
	}
	
	wrs.display = 'none';
	wrs.top = top + 'px';
	wrs.left = left + 'px';
	wrs.position = oldStyle.position != 'relative' && oldStyle.position != 'absolute' ? 'relative' : oldStyle.position;
	wrs.overflow = 'hidden';
	wrs.height = oldStyle.sizes.hb + 'px';
	wrs.width = oldStyle.sizes.wb + 'px';
	wrs.marginTop = oldStyle.margins.t;
	wrs.marginRight = oldStyle.margins.r;
	wrs.marginBottom = oldStyle.margins.b;
	wrs.marginLeft = oldStyle.margins.l;
	if (jQuery.browser.msie) {
		wrs.styleFloat = oldFloat;
	} else {
		wrs.cssFloat = oldFloat;
	}
	e.parentNode.insertBefore(wr, e);
	es.marginTop = '0px';
	es.marginRight = '0px';
	es.marginBottom = '0px';
	es.marginLeft = '0px';
	es.position = 'absolute';
	es.listStyle = 'none';
	es.top = '0px';
	es.left = '0px';
	if (restoreStyle) {
		es.display = 'none';
		es.visibility = oldVisibility;
	}
	wr.appendChild(e);
	wrs.display = 'block';
	return {oldStyle:oldStyle, wrapper:jQuery(wr)};
};