//função que valida cpf
function validaCPF(){
	 
	var i;
	 
	s = document.Form.cpf.value;
	 
	var c = s.substr(0,9);
	 
	var dv = s.substr(9,2);
	 
	var d1 = 0;
	 
	for (i = 0; i < 9; i++)
	 
	{
	 
	d1 += c.charAt(i)*(10-i);
	 
	}
	 
	if (d1 == 0){
	 
	alert("CPF Invalido")
	 
	return false;
	 
	}
	 
	d1 = 11 - (d1 % 11);
	 
	if (d1 > 9) d1 = 0;
	 
	if (dv.charAt(0) != d1)
	 
	{
	 
	alert("CPF Invalido")
	 
	return false;
	 
	}
	 
	 
	d1 *= 2;
	 
	for (i = 0; i < 9; i++)
	 
	{
	 
	d1 += c.charAt(i)*(11-i);
	 
	}
	 
	d1 = 11 - (d1 % 11);
	 
	if (d1 > 9) d1 = 0;
	 
	if (dv.charAt(1) != d1)
	 
	{
	 
	alert("CPF Invalido")
	 
	return false;
	 
	}
	 
	return true;
 
}





//função formata telefone
/*
aplica-se assim:
onkeypress="validaTelefone(document.Form, 'telefone', '(99) 9999-9999', event);"
*/

function validaTelefone(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;
}

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( " 	 ", "" );
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) == "/"))
bolMask = bolMask || ((sMask.charAt(i) == "(") || (sMask.charAt(i) == ")") || (sMask.charAt(i) == " "))
bolMask = bolMask || (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;
}
}




//bloquei letras no teclado e formata valor como monetario
/* 
aplica-se assim: onkeydown="formataMoeda(this,10,event)" onkeyup="return maskKeypress(event)"
*/
function blockKeybord()
{
if((event.keyCode < 48) || (event.keyCode > 57))
{
event.returnValue = false;
}
}

function troca(str,strsai,strentra)
{
while(str.indexOf(strsai)>-1)
{
str = str.replace(strsai,strentra);
}
return str;
}

function formataMoeda(campo,tammax,teclapres,caracter)
{
if(teclapres == null || teclapres == "undefined")
{
var tecla = -1;
}
else
{
var tecla = teclapres.keyCode;
}

if(caracter == null || caracter == "undefined")
{
caracter = ".";
}

vr = campo.value;
if(caracter != "")
{
vr = troca(vr,caracter,"");
}
vr = troca(vr,"/","");
vr = troca(vr,",","");
vr = troca(vr,".","");

tam = vr.length;
if(tecla > 0)
{
if(tam < tammax && tecla != 8)
{
tam = vr.length + 1;
}

if(tecla == 8)
{
tam = tam - 1;
}
}
if(tecla == -1 || tecla == 8 || tecla >= 48 && tecla <= 57 || tecla >= 96 && tecla <= 105)
{
if(tam <= 2)
{
campo.value = vr;
}
if((tam > 2) && (tam <= 5))
{
campo.value = vr.substr(0, tam - 2) + ',' + vr.substr(tam - 2, tam);
}
if((tam >= 6) && (tam <= 8))
{
campo.value = vr.substr(0, tam - 5) + caracter + vr.substr(tam - 5, 3) + ',' + vr.substr(tam - 2, tam);
}
if((tam >= 9) && (tam <= 11))
{
campo.value = vr.substr(0, tam - 8) + caracter + vr.substr(tam - 8, 3) + caracter + vr.substr(tam - 5, 3) + ',' + vr.substr(tam - 2, tam);
}
if((tam >= 12) && (tam <= 14))
{
campo.value = vr.substr(0, tam - 11) + caracter + vr.substr(tam - 11, 3) + caracter + vr.substr(tam - 8, 3) + caracter + vr.substr(tam - 5, 3) + ',' + vr.substr(tam - 2, tam);
}
if((tam >= 15) && (tam <= 17))
{
campo.value = vr.substr(0, tam - 14) + caracter + vr.substr(tam - 14, 3) + caracter + vr.substr(tam - 11, 3) + caracter + vr.substr(tam - 8, 3) + caracter + vr.substr(tam - 5, 3) + ',' + vr.substr(tam - 2, tam);
}
}
}

function maskKeypress(objEvent)
{
var iKeyCode;
iKeyCode = objEvent.keyCode;
if(iKeyCode>=48 && iKeyCode<=57) return true;
return false;
}




//formata CEP
/*
onkeypress="return formataCEP(event,this,'#####-###');"
*/

function formataCEP(e,src,mask) {
    if(window.event) { _TXT = e.keyCode; }
    else if(e.which) { _TXT = e.which; }
    if(_TXT > 47 && _TXT < 58) {
 var i = src.value.length; var saida = mask.substring(0,1); var texto = mask.substring(i)
 if (texto.substring(0,1) != saida) { src.value += texto.substring(0,1); }
    return true; } else { if (_TXT != 8) { return false; }
 else { return true; }
    }
}