<!--
//-----------------
// search box handeling
//-----------------

	function searchfoc(){
if (document.forms[0].s.value=='Buscar...'){
document.forms[0].s.value='';
}
}

	function searchblu(){
if (document.forms[0].s.value==''){
document.forms[0].s.value='Buscar...';
}
}


//-----------------
// form validator
//-----------------

	// --------------------------------------------
	//                  trim
	// Trim leading/trailing whitespace off string
	// --------------------------------------------

	function trim(str)
	{
	  return str.replace(/^\s+|\s+$/g, '');
	}


	// --------------------------------------------
	//                  setfocus
	// Delayed focus setting to get around IE bug
	// --------------------------------------------
	
	function setFocusDelayed()
	{
	  global_valfield.focus();
	}
	
	function setfocus(valfield)
	{
  // save valfield in global variable so value retained when routine exits
	  global_valfield = valfield;
	  setTimeout( 'setFocusDelayed()', 100 );
	}


	// --------------------------------------------
	//                  msg
	// Display warn/error message in HTML element.
	// commonCheck routine must have previously been called
	// --------------------------------------------
	
	function msg(fld,     // id of element to display message in
	             msgtype, // class to give element ("warn" or "error")
	             message) // string to display
	{
	  // setting an empty string can give problems if later set to a 
	  // non-empty string, so ensure a space present. (For Mozilla and Opera one could 
	  // simply use a space, but IE demands something more, like a non-breaking space.)
	  var dispmessage;
	  if (emptyString.test(message)) 
	    dispmessage = String.fromCharCode(nbsp);    
	  else  
	    dispmessage = message;

	  var elem = document.getElementById(fld);
	  elem.firstChild.nodeValue = dispmessage;  
  
	  elem.className = msgtype;   // set the CSS class to adjust appearance of message
	}


	// --------------------------------------------
	//            commonCheck
	// Common code for all validation routines to:
	// (a) check for older / less-equipped browsers
	// (b) check if empty fields are required
	// Returns true (validation passed), 
	//         false (validation failed) or 
	//         proceed (don't know yet)
	// --------------------------------------------

	function commonCheck    (valfield,   // element to be validated
	                         infofield,  // id of element to receive info/error msg
	                         required)   // true if required
	{
	  if (!document.getElementById) 
	    return true;  // not available on this browser - leave validation to the server
	  var elem = document.getElementById(infofield);
	  if (!elem.firstChild) return true;  // not available on this browser 
	  if (elem.firstChild.nodeType != node_text) return true;  // infofield is wrong type of node  
	
	  if (emptyString.test(valfield.value)) {
	    if (required) {
	      msg (infofield, "error", "(nota: esta Información es requerida)");  
	      setfocus(valfield);
	      return false;
	    }
	    else {
	      msg (infofield, "warn", "");   // OK
	      return true;  
	    }
	  }
	  return proceed;
	}
	
	// --------------------------------------------
	//            validatePresent
	// Validate if something has been entered
	// Returns true if so 
	// --------------------------------------------
	
	function validatePresent(valfield,   // element to be validated
	                         infofield ) // id of element to receive info/error msg
	{
	  var stat = commonCheck (valfield, infofield, true);
	  if (stat != proceed) return stat;

	  msg (infofield, "warn", "");  
	  return true;
	}

	
	// --------------------------------------------
	//               validateEmail
	// Validate if e-mail address
	// Returns true if so (and also if could not be executed because of old browser)
	// --------------------------------------------
	
	function validateEmail  (valfield,   // element to be validated
	                         infofield,  // id of element to receive info/error msg
	                         required)   // true if required
	{
	  var stat = commonCheck (valfield, infofield, required);
	  if (stat != proceed) return stat;
	
	  var tfld = trim(valfield.value);  // value of field with whitespace trimmed off
	  var email = /^[^@]+@[^@.]+\.[^@]*\w\w$/  ;
	  if (!email.test(tfld)) {
	    msg (infofield, "error", "(nota: esta direccion de e-mail es incorrecta )");
	    setfocus(valfield);
	    return false;
	  }

	  var email2 = /^[A-Za-z][\w.-]+@\w[\w.-]+\.[\w.-]*[A-Za-z][A-Za-z]$/  ;
	  if (!email2.test(tfld)) 
	    msg (infofield, "warn", "(esta direccion de e-mail es inusual - por favor asegurese de que este correcta)");
	  else
	    msg (infofield, "warn", "");
	  return true;
	}
	//-->