//alert('validate.js loaded')
function IsFilled(sBuffer, sMessage)
{
   if (sBuffer == "") {
		if (sMessage != "") {
      		alert(sMessage);
		}
      return false;
   }
   return true;
}
// Returns true if character c is a letter or digit.
function isLetterOrDigit (c)
{   return (isLetter(c) || isDigit(c))
}
// comprova si el camp passat com a parāmetre te un format de data vālid (dd/mm/aaaa)
function checkDate(dateField)
{
	if (isWhitespace(dateField.value))
    return true;
    
	var pieces = dateField.value.split("/");
	var date = new Date(Date.parse(pieces[1]+"/"+pieces[0]+"/"+pieces[2]));
	if (isNaN(date))
	{
		// alert("Format de data no vālid. Ha de ser dd/mm/aaaa.");
    	dateField.value = "";
		return false;
	}
	
	var d = date.getDate();
	if (d < 10) d = new String("0" + d);
	
	var m = date.getMonth()+1;
	if (m < 10) m = new String("0" + m);
	
	if (date.getFullYear() > 1980) {
    	var y = new String(date.getFullYear());
    } 
	else {
    	var y = new String(date.getFullYear() + 100);
    }
	dateField.value = d + "/" + m + "/" + y;
	return true;
}
// Check whether string s is empty.
function isEmpty(s)
{   return ((s == null) || (s.length == 0))
}
var defaultEmptyOK = false
// whitespace characters
var whitespace = " \t\n\r";
// Returns true if string s is empty or 
// whitespace characters only.
function isWhitespace(s)
{   var i;
    // Is s empty?
    if (isEmpty(s)) return true;
    // Search through string's characters one by one
    // until we find a non-whitespace character.
    // When we do, return false; if we don't, return true.
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character isn't whitespace.
        var c = s.charAt(i);
        if (whitespace.indexOf(c) == -1) return false;
    }
	
    // All characters are whitespace.
    return true;
}
// Returns true if character c is a digit 
// (0 .. 9).
function isDigit (c)
{   return ((c >= "0") && (c <= "9"))
}
// isInteger (STRING s [, BOOLEAN emptyOK])
// 
// Returns true if all characters in string s are numbers.
//
// Accepts non-signed integers only. Does not accept floating 
// point, exponential notation, etc.
//
// We don't use parseInt because that would accept a string
// with trailing non-numeric characters.
//
// By default, returns defaultEmptyOK if s is empty.
// There is an optional second argument called emptyOK.
// emptyOK is used to override for a single function call
//      the default behavior which is specified globally by
//      defaultEmptyOK.
// If emptyOK is false (or any value other than true), 
//      the function will return false if s is empty.
// If emptyOK is true, the function will return true if s is empty.
//
// EXAMPLE FUNCTION CALL:     RESULT:
// isInteger ("5")            true 
// isInteger ("")             defaultEmptyOK
// isInteger ("-5")           false
// isInteger ("", true)       true
// isInteger ("", false)      false
// isInteger ("5", false)     true
function isInteger (s)
{   var i;
    if (isEmpty(s)) 
       if (isInteger.arguments.length == 1) return defaultEmptyOK;
       else return (isInteger.arguments[1] == true);
    // Search through string's characters one by one
    // until we find a non-numeric character.
    // When we do, return false; if we don't, return true.
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character is number.
        var c = s.charAt(i);
        if (!isDigit(c)) return false;
    }
    // All characters are numbers.
    return true;
}
// isSignedInteger (STRING s [, BOOLEAN emptyOK])
// 
// Returns true if all characters are numbers; 
// first character is allowed to be + or - as well.
//
// Does not accept floating point, exponential notation, etc.
//
// We don't use parseInt because that would accept a string
// with trailing non-numeric characters.
//
// For explanation of optional argument emptyOK,
// see comments of function isInteger.
//
// EXAMPLE FUNCTION CALL:          RESULT:
// isSignedInteger ("5")           true 
// isSignedInteger ("")            defaultEmptyOK
// isSignedInteger ("-5")          true
// isSignedInteger ("+5")          true
// isSignedInteger ("", false)     false
// isSignedInteger ("", true)      true
function isSignedInteger (s)
{
	if (isEmpty(s)) 
       if (isSignedInteger.arguments.length == 1) return defaultEmptyOK;
       else return (isSignedInteger.arguments[1] == true);
    else {
        var startPos = 0;
        var secondArg = defaultEmptyOK;
        if (isSignedInteger.arguments.length > 1)
            secondArg = isSignedInteger.arguments[1];		
        // skip leading + or -
        if ( (s.charAt(0) == "-") || (s.charAt(0) == "+") )
           startPos = 1;            
        return (isInteger(s.substring(startPos, s.length), secondArg))
    }
}
// isNonnegativeInteger (STRING s [, BOOLEAN emptyOK])
// 
// Returns true if string s is an integer >= 0.
//
// For explanation of optional argument emptyOK,
// see comments of function isInteger.
function isNonnegativeInteger (s)
{   var secondArg = defaultEmptyOK;
    if (isNonnegativeInteger.arguments.length > 1)
        secondArg = isNonnegativeInteger.arguments[1];
    // The next line is a bit byzantine.  What it means is:
    // a) s must be a signed integer, AND
    // b) one of the following must be true:
    //    i)  s is empty and we are supposed to return true for
    //        empty strings
    //    ii) this is a number >= 0
    return (isSignedInteger(s, secondArg)
         && ( (isEmpty(s) && secondArg)  || (parseInt (s,10) >= 0) ) );
}
// isEmail (STRING s [, BOOLEAN emptyOK])
// 
// Email address must be of form a@b.c -- in other words:
// * there must be at least one character before the @
// * there must be at least one character before and after the .
// * the characters @ and . are both required
//
// For explanation of optional argument emptyOK,
// see comments of function isInteger.
function isEmail (s)
{   if (isEmpty(s)) 
       if (isEmail.arguments.length == 1) return defaultEmptyOK;
       else return (isEmail.arguments[1] == true);
   
    // is s whitespace?
    if (isWhitespace(s)) return false;
    
    // there must be >= 1 character before @, so we
    // start looking at character position 1 
    // (i.e. second character)
    var i = 1;
    var sLength = s.length;
    // look for @
    while ((i < sLength) && (s.charAt(i) != "@"))
    { i++
    }
    if ((i >= sLength) || (s.charAt(i) != "@")) return false;
    else i += 2;
    // look for .
    while ((i < sLength) && (s.charAt(i) != "."))
    { i++
    }
    // there must be at least one character after the .
    if ((i >= sLength - 1) || (s.charAt(i) != ".")) return false;
    else return true;
}
// Buscar paraules clau
function CrearURL(sPag,sFormul)
	{
		var sFrase;
		var i;
		var sTemp;
		var sTemp2;
		var sOld;
		var sDif_Cero;
		
		sOld=" "
		sTemp2=""
		sTemp=eval('document.'+sFormul+'.txtBuscar.value;')
		if (sTemp!="")
		{
			sDif_Cero=false;
			for (i=0; i<sTemp.length;i++)
			{
				if (sTemp.charAt(i)!=" ")
				{
					sDif_Cero=true;
				}
			}
		  if (sDif_Cero==true)		
		  {	
			for (i=0; i<sTemp.length;i++)
			{
				if (sTemp.charAt(i)!=" ")
				{
					sTemp2=sTemp2+sTemp.charAt(i);
				}
				else
				{
					if (sTemp.charAt(i)==" " & sOld!=" ")
					{
						sTemp2=sTemp2+"$";
					}
				}
				sOld=sTemp.charAt(i);
			}
			sFrase = sPag+"?sKeyWords=" + sTemp2;
			window.top.location.href = sFrase;	
		 }
		 else
		 {
			alert("Ha d'escriure una paraula a buscar");
		 }	
		}
		else
		{
			alert("Ha d'escriure una paraula a buscar");
		}
	}