// JavaScript Document

function DisableInput() { 
    document.search_ri.city.disabled  = true;
	document.search_ri.area.disabled  = true;
	document.search_ri.submit.disabled  = true;	
  if (document.search_ri.municipality.options.length!=0 )
	{  
	document.search_ri.municipality.disabled = false; 
  }
  else {
	document.search_ri.municipality.disabled  = true;
	
	
  }
  

 }
function DisableCity() { 
  document.search_ri.submit.disabled  = true;
  document.search_ri.area.disabled  = true;
  if (document.search_ri.city.options.length!=1)
	{  
	document.search_ri.city.disabled = false;
  }
  else {
	document.search_ri.city.disabled  = true;
	
  }
  

 }
function DisableArea() { 

  if (document.search_ri.area.options.length!=1)
	{  
	document.search_ri.area.disabled = false; 
	
  }
  else {
	document.search_ri.area.disabled  = true;
	
  }
  

 }
 
function DisableSubmit() { 
  if ((document.search_ri.area.options.length<3)&&(document.search_ri.area.options.length>1))
	{  
	document.search_ri.submit.disabled = false; 
	 }
  else {
	document.search_ri.submit.disabled  = true;
	
  }
  }
	
function EnableSubmit() { 
  if (document.search_ri.area.selectedIndex>=1)
  {  
	document.search_ri.submit.disabled = false;
	 }
  else {
	document.search_ri.submit.disabled  = true;
	
  }
  }