function BlockKeybord()
                {
                        if(window.event) // IE
                        {
                                if((event.keyCode < 48) || (event.keyCode > 57))
                                {
                                        event.returnValue = false;
                                }
                        }
                        else if(e.which) // Netscape/Firefox/Opera
                        {
                                if((event.which < 48) || (event.which > 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;

                        if(window.event) // IE
                        {
                                iKeyCode = objEvent.keyCode;
                                if(iKeyCode>=48 && iKeyCode<=57) return true;
                                return false;
                        }
                        else if(e.which) // Netscape/Firefox/Opera
                        {
                                iKeyCode = objEvent.which;
                                if(iKeyCode>=48 && iKeyCode<=57) return true;
                                return false;
                        }


                }