function showHiddenInput(id){

	var input = document.getElementById(id);
		
	if (input)
	{
	   
	    if(input.style.visibility == 'hidden' || input.style.visibility == '')
	    {
		    input.style.visibility = 'visible'; 
	    }
	    else
	    {
		    input.style.visibility = 'hidden'; 
	    }
	}
	
	return false;
}