function check_login()

{

	

	if(check_fields("user","user_div"))

	   var	usr = true;

	else

	  var usr = false;



	if(check_fields("pass","pass_div"))

	   var	ps = true;

	else

	  var ps = false;



	if(check_fields("code","code_div"))

	   var	cd = true;

	else

	  var cd = false;	   

	  

   if((usr == true) && (ps == true) && (cd == true))

		return true;

   else

		return false;

}



function check_fields(field_id,span_name)

{	

	  if (document.getElementById(field_id).value.length != 0)

	  {

		document.getElementById(span_name).style.visibility = 'hidden';

		document.getElementById(span_name).style.position = 'absolute';	

		return true;

	  }

	  else

	  {

		document.getElementById(span_name).style.visibility = 'visible';

		document.getElementById(span_name).style.position = 'static';

		return false;

	  }

}