function mascara(objForm, strField, 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 if(document.getElementById) { // FireFox
		nTecla = evtKeyPress.which;
	}

     sValue = objForm[strField].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( " ", "" );
     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++;
     }

     objForm[strField].value = sCod;

     if (nTecla != 8) { // backspace
       if (sMask.charAt(i-1) == "9") { // apenas números...
         return ((nTecla > 47) && (nTecla < 58)); } // números de 0 a 9
       else { // qualquer caracter...
         return true;
       } }
     else {
       return true;
     }
   }
   
   //Função para valores
   function currencyFormat(fld, milSep, decSep, e) {
		var sep = 0;
		var key = '';
		var i = j = 0;
		var len = len2 = 0;
		var strCheck = '0123456789';
		var aux = aux2 = '';
		var whichCode = (window.Event) ? e.which : e.keyCode;
		if (whichCode == 13) return true;  // Enter
		key = String.fromCharCode(whichCode);  // Get key value from key code
		if (strCheck.indexOf(key) == -1) return false;  // Not a valid key
		len = fld.value.length;
		for(i = 0; i < len; i++)
		if ((fld.value.charAt(i) != '0') && (fld.value.charAt(i) != decSep)) break;
		aux = '';
		for(; i < len; i++)
		if (strCheck.indexOf(fld.value.charAt(i))!=-1) aux += fld.value.charAt(i);
		aux += key;
		len = aux.length;
		if (len == 0) fld.value = '';
		if (len == 1) fld.value = '0'+ decSep + '0' + aux;
		if (len == 2) fld.value = '0'+ decSep + aux;
		if (len > 2) {
			aux2 = '';
			for (j = 0, i = len - 3; i >= 0; i--) {
				if (j == 3) {
					aux2 += milSep;
					j = 0;
				}
				aux2 += aux.charAt(i);
				j++;
			}
			fld.value = '';
			len2 = aux2.length;
			for (i = len2 - 1; i >= 0; i--)
			fld.value += aux2.charAt(i);
			fld.value += decSep + aux.substr(len - 2, len);
		}
		return false;
   }
   
function validaForm(){ 
d = document.form1;
           //validar nome
           if (d.titulo.value == ""){
                     alert("O campo " + d.titulo.name + " deve ser preenchido!");
                     d.titulo.focus();
                     return false;
           }
           //validar user
         if (d.descricao.value == ""){
                   alert("O campo " + d.descricao.name + " deve ser preenchido!");
                   d.descricao.focus();
                   return false;
         }
        
        //validar data de nascimento
         erro=0;
         hoje = new Date();
         anoAtual = hoje.getFullYear();
         barras = d.data.value.split("/");
         if (barras.length == 3){
                   dia = barras[0];
                   mes = barras[1];
                   ano = barras[2];
                   resultado = (!isNaN(dia) && (dia > 0) && (dia < 32)) && (!isNaN(mes) && (mes > 0) && (mes < 13)) && (!isNaN(ano) && (ano.length == 4) && (ano <= anoAtual && ano >= 1900));
                   if (!resultado) {
                             alert("Formato de data invalido!");
                             d.data.focus();
                             return false;
                   }
         } else {
                   alert("Formato de data invalido!");
                   d.data.focus();
                   return false;
         }
        
         return true;
 }