// Interspire Select Replacement
/*
	ISSelectReplacement
*/
var ISSelectReplacement = {
	init: function()
	{
		if(window.addEventListener)
			window.addEventListener('load', ISSelectReplacement.on_load, false);
		else
			window.attachEvent('onload', ISSelectReplacement.on_load);
	},

	on_load: function()
	{
		var selects = document.getElementsByTagName('SELECT');
		if (!selects) {
			return false;
		}

		for (var i = 0; i < selects.length; i++) {
			var select = selects[i];
			
			if ((!select.multiple) || (select.className.indexOf('ISSelectReplacement') == -1) || (select.className.indexOf('ISSelectAlreadyReplaced') > -1))  {
				continue;
			}

			ISSelectReplacement.replace_select(selects[i]);
		}
	},

	replace_select: function(element)
	{
		var name = element.name;

		// Start whipping up our replacement
		var replacement = document.createElement('DIV');
		replacement.className = "ISSelect "+element.className;
		replacement.className += "ISSelectAlreadyReplaced";

		// If the offsetHeight is 0, this select is hidden
		if(element.offsetHeight == 0)
		{
			var clone = element.cloneNode(true);
			clone.style.position = 'absolute';
			clone.style.left = '-10000px';
			clone.style.top = '-10000px';
			clone.style.display = 'block';
			document.body.appendChild(clone);
			offset_height = clone.offsetHeight+"px";
			offset_width = clone.offsetWidth+"px";
			clone.parentNode.removeChild(clone);
		}
		else
		{
			offset_height = element.offsetHeight+"px";
			offset_width = element.offsetWidth+"px";
		}
		var style_offset_width = ISSelectReplacement.get_prop(element, 'width');
		if(style_offset_width && style_offset_width != "auto") offset_width = style_offset_width;
		var style_offset_height = ISSelectReplacement.get_prop(element, 'height');
		if(style_offset_height && style_offset_height != "auto") offset_height = style_offset_height;

		replacement.style.height = offset_height;
		replacement.style.width = offset_width;
		if(element.id)
		{
			replacement.id = element.id;
			element.id += "_old";
		}

		replacement.select = element;

		if(element.ondblclick)
		{
			replacement.ondblclick = function()
			{
				if(document.createEvent)
				{
					var evt = document.createEvent('MouseEvents');
					evt.initMouseEvent('dblclick', true, true, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);
					this.select.dispatchEvent(evt);
				}
				else if(document.createEventObject)
				{
					var evt = document.createEventObject();
					this.select.fireEvent("ondblclick", evt);
				}
			}
		}

		var innerhtml = '<ul>';

		// Loop de loop
		for(var i = 0; i < element.childNodes.length; i++)
		{
			if(!element.childNodes[i].tagName || element.nodeType == 3) continue;
			if(element.childNodes[i].tagName == "OPTGROUP")
			{
				innerhtml += ISSelectReplacement.add_group(element, element.childNodes[i], i);
			}
			else if(element.childNodes[i].tagName == "OPTION")
			{
				innerhtml += ISSelectReplacement.add_option(element, element.childNodes[i], i);
			}
		}

		innerhtml += '</ul>';
		replacement.innerHTML = innerhtml;

		element.parentNode.insertBefore(replacement, element);
		element.style.display = 'none';
	},

	get_prop: function(element, prop)
	{
		if(element.currentStyle)
		{
			return element.currentStyle[prop];
		}
		else if(document.defaultView && document.defaultView.getComputedStyle)
		{
			prop = prop.replace(/([A-Z])/g,"-$1");
			prop = prop.toLowerCase();
			return document.defaultView.getComputedStyle(element, "").getPropertyValue(prop);
		}
	},

	add_group: function(select, group, group_id)
	{
		group_html = '<li class="ISSelectGroup">' +
			'<div>'+group.label+'</div>';

		if(group.childNodes)
		{
			group_html += '<ul>';
			for(var i = 0; i < group.childNodes.length; i++)
			{
				if(!group.childNodes[i].tagName || group.childNodes[i].nodeType == 3) continue;
				group_html += ISSelectReplacement.add_option(select, group.childNodes[i], [group_id, i]);
			}
			group_html += '</ul>';
		}

		group_html += '</li>';
		return group_html;
	},

	add_option: function(select, option, id)
	{
		var value, element_class, checked = '';
		if(option.selected)
		{
			element_class = "SelectedRow";
			checked = 'checked="checked"'
		}
		var label = option.innerHTML;
		var whitespace = label.match(/^\s*(&nbsp;)*/);
		if(whitespace[0])
		{
			label = label.replace(/^\s*(&nbsp;)*/, '');
		}
		
		var issType = option.getAttribute("isstype");
		var optionExtraKey = option.getAttribute("optionextrakey");
		
		var html = 	'<li class="'+element_class+'" onselectstart="return false;" style="-moz-user-select: none;" onmouseover="if(this.className != \'SelectedRow\') { this.className=\'ISSelectOptionHover\'; }"' +
					'onmouseout=\"if(this.className != \'SelectedRow\') { this.className=\'\' }" onclick="ISSelectReplacement.on_click(this, \''+id+'\');">' + whitespace[0];		
		
		switch (issType) {
			case "multi_check":
				html +=	'<input type="checkbox" name="ISSelectReplacement_'+select.name+'[' + optionExtraKey + '][]" value="'+option.value+'" '+checked+'" onclick="ISSelectReplacement.on_click(this, \''+id+'\');" />' + label;
				break;
				
			case "freeform":
				html +=	'<input type="textbox" name="ISSelectReplacement_'+select.name+'[' + optionExtraKey + '][]" value="' + option.value + '" onclick="ISSelectReplacement.on_click(this, \''+id+'\');" />';
				break;
		}

		html += '</li>';		

		return html;
	},

	on_click: function(element, id)
	{
		if(element.dblclicktimeout)
		{
			return false;
		}
		if(element.tagName == "INPUT")
		{
			var checkbox = element;
			var element = element.parentNode;
		}
		else
		{
			var checkbox = element.getElementsByTagName('input')[0];
			checkbox.checked = !checkbox.checked;
		}

		element.dblclicktimeout = setTimeout(function() { element.dblclicktimeout = ''; }, 250);

		var id = id.split(',');

		// Selected an option group child
		if(id.length == 2)
		{
			var replacement = element.parentNode.parentNode.parentNode.parentNode;
			replacement.select.childNodes[id[0]].childNodes[id[1]].selected = checkbox.checked;
		}
		else
		{
			var replacement = element.parentNode.parentNode;
			replacement.select.childNodes[id[0]].selected = checkbox.checked;
		}
		if(checkbox.checked)
		{
			element.className = "SelectedRow";
		}
		else
		{
			element.className = '';
		}
	}
};

ISSelectReplacement.init();