cms.form = 
{
    selectOptions : function(fieldId)
    {
        var field = document.getElementById(fieldId);
        if (field.nodeName.toLowerCase() == "select" && field.options.length > 0)
        {
            if (!field.getAttribute("multiple"))
            {
                field.setAttribute("multiple", "multiple");
            }
            for (var iOptions = 0 ; iOptions < field.options.length ; iOptions++)
            {
                field.options[iOptions].selected = true;
            }
        }
    },
    
	getFieldDisabledState : function(field)
	{
        switch (field.nodeName.toLowerCase())
        {
            case 'input':
                switch (field.type)
                {
                    case 'text':
                    case 'file':
                    case 'password':
                        return field.value.length == 0;

                    case 'checkbox':
                    case 'radio':
                        return !field.checked;
                }
                break;

            case 'textarea':
                return field.value.length == 0;
        }
		return true;
	},
	
	toggleFieldDisabled : function(field, disabledState, firstField)
	{
		field.disabled = disabledState;
		
		classNames = field.className.split(" ");
		var className = "";
		for (var iClassNames = 0 ; iClassNames < classNames.length ; iClassNames++)
		{
			if (classNames[iClassNames] != "disabled")
			{
				if (className.length > 0)
				{
					className += " ";
				}
				className += classNames[iClassNames];
			}
		}
		if (disabledState)
		{
			className += " disabled";
		}
		field.className = className;

		if (firstField && !disabledState)
		{
			field.focus();
		}
	},
	
	toggleDisabledState : function()
	{
		var targetFields = this.toggleDisabledState.arguments;
        var disabled = this.getFieldDisabledState(targetFields[0]);

        var toggled = 0;
		for (var iTargetFields = 1 ; iTargetFields < targetFields.length ; iTargetFields++)
		{
			var targetField = document.getElementById(targetFields[iTargetFields]);
		    if (targetField != null)
			{
				this.toggleFieldDisabled(targetField, disabled, toggled++ == 0);
			}
		}
	},

	getFormQueryData : function(formElement, queryData)
	{
		if (!queryData)
		{
			var queryData = new Object();
		}
		var nodeNames = ["input", "select", "textarea", "option"];
		for (var iNodeNames = 0 ; iNodeNames < nodeNames.length ; iNodeNames++)
		{
			var fields = formElement.getElementsByTagName(nodeNames[iNodeNames]);
			for (var iFields = 0 ; iFields < fields.length ; iFields++)
			{
				if (fields[iFields].className.match(/tinymce/))
				{
					var tinyMceField = tinyMCE.get(fields[iFields].name);
					fields[iFields].value = tinyMceField.getContent();
					tinyMCE.execCommand('mceRemoveControl', false, fields[iFields].name);
				}
				queryData[fields[iFields].name] = fields[iFields].value;
			}
		}
		return queryData;
	},

	submitAsHttpRequest : function(formElement, queryData, contentReplaceAncestor, contentReplaceUrl)
	{
		var request = new HttpRequest();
		if (contentReplaceUrl)
		{
			request.setCallback(
				function() { cms.content.replace(formElement, contentReplaceUrl, contentReplaceAncestor); },
				this);
		}
		else
		{
			request.element = (contentReplaceAncestor)? cms.content.getAncestor(formElement, contentReplaceAncestor) : formElement;
			request.setCallback(cms.content.onReplace, cms.content, false);
		}
		request.sendRequest(formElement.action, this.getFormQueryData(formElement, queryData), true);
	}
}