[nekt]

У меня для преобразования хэша в форму используется вот такая функция

var add = function(elementName,className,before)
{
	if(!elementName)
		return;
	if(!className)
		className=''
	var element =document.createElement(elementName)
	
	if(this!=window)
	{
		if(before && before.parentNode==this)
			this.insertBefore(element,before)
		else
			this.appendChild(element)
	}
	
	element.className=className
	element.add=add
	element.set=set
	element.clearit=clearit
	element.clone=clone
	element.addField=addField
	
	return element
}
function addHiddenInput(form,name,value)
{
	var input = add('input')
	input.setAttribute('type','hidden')
	input.setAttribute('name',name)
	input.setAttribute('value',value)
	form.appendChild(input)
}
function convertHashToForm(data,form,name)
{
	if(typeof(form)=="undefined")
	{
		form = add('form')
	}
	if(typeof(name)=="undefined")
	{
		name = ""
	}
	
	if(typeof(data)=="object" && typeof(data.tagName)=='undefined') for(var k in data)
	{
		var newName = ""
		if(name == "")
			newName = k
		else
			newName = name + "["+k+"]"
		
		var value = data[k]
		if(typeof(value)=='object' && value != null)
		{
			convertHashToForm(value,form,newName)
		}
		else
		{
			addHiddenInput(form,newName,value)
		}
	}
	
	return form
}