//              MÁSCARA DE VALORES              //
// PARA USAR:

// Data:<input type="text" size="20" onkeypress="return txtBoxFormat(this, '99/99/9999', event);">
// RG:<input type="text" size="20" onkeypress="return txtBoxFormat(this, '99.999.999-9', event);">
// Telefone:<input type="text" size="20" onkeypress="return txtBoxFormat(this, '(99)9999-9999', event);">
// Código:<input type="text" size="20" onkeypress="return txtBoxFormat(this, '99-999', event);">

//\\ ## //\\

	function txtBoxFormat(objeto, sMask, evtKeyPress) {
		var i, nCount, sValue, fldLen, mskLen,bolMask, sCod, nTecla;
	
	
	if(document.all) { // Internet Explorer
		nTecla = evtKeyPress.keyCode;
	} else if(document.layers) { // Nestcape
		nTecla = evtKeyPress.which;
	} else {
		nTecla = evtKeyPress.which;
		if (nTecla == 8) {
			return true;
		}
	}
	
		sValue = objeto.value;
	
		// Limpa todos os caracteres de formatação que
		// já estiverem no campo.
		sValue = sValue.toString().replace( "-", "" );
		sValue = sValue.toString().replace( "-", "" );
		sValue = sValue.toString().replace( ".", "" );
		sValue = sValue.toString().replace( ".", "" );
		sValue = sValue.toString().replace( "/", "" );
		sValue = sValue.toString().replace( "/", "" );
		sValue = sValue.toString().replace( ":", "" );
		sValue = sValue.toString().replace( ":", "" );
		sValue = sValue.toString().replace( "(", "" );
		sValue = sValue.toString().replace( "(", "" );
		sValue = sValue.toString().replace( ")", "" );
		sValue = sValue.toString().replace( ")", "" );
		sValue = sValue.toString().replace( " ", "" );
		sValue = sValue.toString().replace( " ", "" );
		fldLen = sValue.length;
		mskLen = sMask.length;
	
		i = 0;
		nCount = 0;
		sCod = "";
		mskLen = fldLen;
	
		while (i <= mskLen) {
		  bolMask = ((sMask.charAt(i) == "-") || (sMask.charAt(i) == ".") || (sMask.charAt(i) == "/") || (sMask.charAt(i) == ":"))
		  bolMask = bolMask || ((sMask.charAt(i) == "(") || (sMask.charAt(i) == ")") || (sMask.charAt(i) == " "))
	
		  if (bolMask) {
			sCod += sMask.charAt(i);
			mskLen++; }
		  else {
			sCod += sValue.charAt(nCount);
			nCount++;
		  }
	
		  i++;
		}
	
		objeto.value = sCod;
	
		if (nTecla != 8) { // backspace
		  if (sMask.charAt(i-1) == "9") { // apenas números...
			return ((nTecla > 47) && (nTecla < 58)); } 
		  else { // qualquer caracter...
			return true;
		  } 
		}
		else {
		  return true;
		}
	  }
	  
//###############################################################################################