<html>
<title>Calculadora padrão Desenvolvida por David Mendes Gonsaga&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</title>
<head>

<STYLE>
   BODY {border-width: 5px; border-color: BLACK; border-style: solid}
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<style>
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.inputBox {	BACKGROUND-COLOR:#6699FF ;	COLOR: BLUE;}
.inputtext {            BACKGROUND-COLOR:#CCCCCC ;  COLOR: RED; }
.inputesp {            BACKGROUND-COLOR:#3366CC ;  COLOR: RED; }
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<SCRIPT language=JavaScript>
dCol='BLUE';//date colour.
fCol='YELLOW';//face colour.
sCol='BLUE';//seconds colour.
mCol='BLUE';//minutes colour.
hCol='BLUE';//hours colour.
ClockHeight=40;
ClockWidth=40;
ClockFromMouseY=0;
ClockFromMouseX=100;

//Alter nothing below! Alignments will be lost!

d=new Array("DOMINGO","SEGUNDA","TERÇA","QUARTA","QUINTA","SEXTA","SABADO");
m=new Array("JANEIRO","FEVEREIRO","MARÇO","ABRIL","MAIO","JUNHO","JULHO","AUGOSTO","SETENBRO","OTUBRO","NOVENBRO","DEZENBRO");
date=new Date();
day=date.getDate();
year=date.getYear();
if (year < 2000) year=year+1900;
TodaysDate=" "+d[date.getDay()]+" "+day+" "+m[date.getMonth()]+" "+year;
D=TodaysDate.split('');
H='...';
H=H.split('');
M='....';
M=M.split('');
S='.....';
S=S.split('');
Face='1 2 3 4 5 6 7 8 9 10 11 12';
font='Arial';
size=1;
speed=0.6;
ns=(document.layers);
ie=(document.all);
Face=Face.split(' ');
n=Face.length;
a=size*10;
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props2="<font face="+font+" size="+size+" color="+dCol+"><B>";
Split=360/n;
Dsplit=360/D.length;
HandHeight=ClockHeight/4.5
HandWidth=ClockWidth/4.5
HandY=-7;
HandX=-2.5;
scrll=0;
step=0.06;
currStep=0;
y=new Array();x=new Array();Y=new Array();X=new Array();
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for (i=0; i < n; i++)
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document.write('<layer name=nsSeconds'+i+' top=0 left=0 width=15 height=15><font face=Arial size=3 color='+sCol+'><center><b>'+S[i]+'</b></center></font></layer>');
for (i=0; i < M.length; i++)
document.write('<layer name=nsMinutes'+i+' top=0 left=0 width=15 height=15><font face=Arial size=3 color='+mCol+'><center><b>'+M[i]+'</b></center></font></layer>');
for (i=0; i < H.length; i++)
document.write('<layer name=nsHours'+i+' top=0 left=0 width=15 height=15><font face=Arial size=3 color='+hCol+'><center><b>'+H[i]+'</b></center></font></layer>');
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document.write('<div id="ieDate" style="position:absolute;top:0px;left:0;height:'+a+';width:'+a+';text-align:center">'+props2+D[i]+'</B></font></div>');
document.write('</div></div>');
document.write('<div id="Of" style="position:absolute;top:0px;left:0px"><div style="position:relative">');
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document.write('<div id="Oh" style="position:absolute;top:0px;left:0px"><div style="position:relative">');
for (i=0; i < H.length; i++)
document.write('<div id="ieHours" style="position:absolute;width:16px;height:16px;font-family:Arial;font-size:16px;color:'+hCol+';text-align:center;font-weight:bold">'+H[i]+'</div>');
document.write('</div></div>');
document.write('<div id="Om" style="position:absolute;top:0px;left:0px"><div style="position:relative">');
for (i=0; i < M.length; i++)
document.write('<div id="ieMinutes" style="position:absolute;width:16px;height:16px;font-family:Arial;font-size:16px;color:'+mCol+';text-align:center;font-weight:bold">'+M[i]+'</div>');
document.write('</div></div>')
document.write('<div id="Os" style="position:absolute;top:0px;left:0px"><div style="position:relative">');
for (i=0; i < S.length; i++)
document.write('<div id="ieSeconds" style="position:absolute;width:16px;height:16px;font-family:Arial;font-size:16px;color:'+sCol+';text-align:center;font-weight:bold">'+S[i]+'</div>');
document.write('</div></div>')
}
(ns)?window.captureEvents(Event.MOUSEMOVE):0;
function Mouse(evnt){
ymouse = (ns)?evnt.pageY+ClockFromMouseY-(window.pageYOffset):event.y+ClockFromMouseY;
xmouse = (ns)?evnt.pageX+ClockFromMouseX:event.x+ClockFromMouseX;
}
(ns)?window.onMouseMove=Mouse:document.onmousemove=Mouse;
function ClockAndAssign(){
time = new Date ();
secs = time.getSeconds();
sec = -1.57 + Math.PI * secs/30;
mins = time.getMinutes();
min = -1.57 + Math.PI * mins/30;
hr = time.getHours();
hrs = -1.575 + Math.PI * hr/6+Math.PI*parseInt(time.getMinutes())/360;
if (ie){
Od.style.top=window.document.body.scrollTop;
Of.style.top=window.document.body.scrollTop;
Oh.style.top=window.document.body.scrollTop;
Om.style.top=window.document.body.scrollTop;
Os.style.top=window.document.body.scrollTop;
}
for (i=0; i < n; i++){
 var F=(ns)?document.layers['nsFace'+i]:ieFace[i].style;
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 F.left=x[i] + ClockWidth*Math.cos(-1.0471 + i*Split*Math.PI/180);
 }
for (i=0; i < H.length; i++){
 var HL=(ns)?document.layers['nsHours'+i]:ieHours[i].style;
 HL.top=y[i]+HandY+(i*HandHeight)*Math.sin(hrs)+scrll;
 HL.left=x[i]+HandX+(i*HandWidth)*Math.cos(hrs);
 }
for (i=0; i < M.length; i++){
 var ML=(ns)?document.layers['nsMinutes'+i]:ieMinutes[i].style;
 ML.top=y[i]+HandY+(i*HandHeight)*Math.sin(min)+scrll;
 ML.left=x[i]+HandX+(i*HandWidth)*Math.cos(min);
 }
for (i=0; i < S.length; i++){
 var SL=(ns)?document.layers['nsSeconds'+i]:ieSeconds[i].style;
 SL.top=y[i]+HandY+(i*HandHeight)*Math.sin(sec)+scrll;
 SL.left=x[i]+HandX+(i*HandWidth)*Math.cos(sec);
 }
for (i=0; i < D.length; i++){
 var DL=(ns)?document.layers['nsDate'+i]:ieDate[i].style;
 DL.top=Dy[i] + ClockHeight*1.5*Math.sin(currStep+i*Dsplit*Math.PI/180)+scrll;
 DL.left=Dx[i] + ClockWidth*1.5*Math.cos(currStep+i*Dsplit*Math.PI/180);
 }
currStep-=step;
}
function Delay(){
scrll=(ns)?window.pageYOffset:0;
Dy[0]=Math.round(DY[0]+=((ymouse)-DY[0])*speed);
Dx[0]=Math.round(DX[0]+=((xmouse)-DX[0])*speed);
for (i=1; i < D.length; i++){
Dy[i]=Math.round(DY[i]+=(Dy[i-1]-DY[i])*speed);
Dx[i]=Math.round(DX[i]+=(Dx[i-1]-DX[i])*speed);
}
y[0]=Math.round(Y[0]+=((ymouse)-Y[0])*speed);
x[0]=Math.round(X[0]+=((xmouse)-X[0])*speed);
for (i=1; i < n; i++){
y[i]=Math.round(Y[i]+=(y[i-1]-Y[i])*speed);
x[i]=Math.round(X[i]+=(x[i-1]-X[i])*speed);
}
ClockAndAssign();
setTimeout('Delay()',20);
}
if (ns||ie)window.onload=Delay;
</SCRIPT>

<SCRIPT> var repeat=1 // 0 para rolar uma vez, 1 para rolar infinitamente
var title=document.title
var leng=title.length
var start=1
function titlemove() {
titl=title.substring(start, leng) + title.substring(0, start)
document.title=titl
start++
if (start==leng+1) {
start=0
if (repeat==0)
return
}
setTimeout("titlemove()",140)
}
if (document.title)
titlemove()
</SCRIPT>

<script>
var op
var num1=0
var num2=0
var num3=0
var pval=0
var valeleva=0
var spo=0
namevi= ''

// Funcao para jogar os valores no campo do text
function juncao(re)
{
var resultado
resultado = c1.value + re
c1.value = resultado
}

// Funcao para Limpar o Campo
function Limpar()
{
c1.value = ""
}

function dividir()
{
op = 1
num1 = c1.value
javascript: Limpar()
}

function multiplicar()
{
op = 2
num1 = c1.value
javascript: Limpar()
}

function diminuir()
{
op = 3
num1 = c1.value
javascript: Limpar()
}

function somar()
{
op=4
num1 = parseFloat(c1.value)
javascript: Limpar()
}

function elevado2()
{
c1.value = c1.value * c1.value 
if (c1.value == 'Infinity'){
        c1.value = 'Valor infinito meu amigo' 
       }
else if (c1.value == 'NaN'){
        c1.value = 'Calculo Impossivel'
       }
}

function elevado3()
{
c1.value = c1.value * c1.value * c1.value
if (c1.value == 'Infinity'){
        c1.value = 'Valor infinito meu amigo'
       }
else if (c1.value == 'NaN'){
        c1.value = 'Calculo Impossivel'
       }
}

function elevadoy()
{
valeleva = c1.value
fixo = c1.value
spo = 1
Limpar()
}

function igual()
{

if (spo == 1){
    var cont
    var parar = c1.value
    c1.value = 1
    for(cont=1;cont<parar;cont++)
          valeleva = valeleva * fixo
    c1.value = valeleva 
  }

if (op == 1) {
        num2 = c1.value
        if (num2 == 0){
                 alert('Nao ha divisão por ZERO')
                 return(0)
                }
        num3  = num1 / num2
        c1.value = num3
        }

else if (op == 2) {
        num2 = c1.value
        num3  = num1 * num2
        c1.value = num3
        }

else if (op == 3) {
        num2 = c1.value
        num3  = num1 - num2
        c1.value = num3
        }

else if (op == 4) {
        num2 = parseFloat(c1.value)
        num3  = num1 + num2
        c1.value = num3
        }

if (c1.value == 'Infinity'){
        c1.value = 'Valor infinito meu amigo'
       }

else if (c1.value == 'NaN'){
        c1.value = 'Calculo Impossivel'
       }

}

function divide1()
{
  if (c1.value == 0){
    alert('Nao ha divisão por ZERO')
    return(0)
    }
  c1.value = 1 / c1.value
  if (c1.value == 'Infinity'){
        c1.value = 'Valor infinito meu amigo'
       }
  else if (c1.value == 'NaN'){
             c1.value = 'Calculo Impossivel'
            }
}

function inverter()
{
  c1.value = c1.value * -1
}

</script>
</head>
<body  bgcolor="99CCFF">
<script>
namevi = prompt('Digite Seu Nome para as Boas Vindas');

if(namevi == 'undefined'){
  namevi = 'Visitante'
  }

if(namevi == null){
  namevi = 'Visitante'
  }

if(namevi == ''){
  namevi = 'Visitante'
  }
</script>
============================================================================================================
<center><h1>Calculadora Padrão</h1></center>
============================================================================================================
<center>
╔=========================╗<br>
║▒▒▒▒<input type="text" name="c1" value="" class="inputtext">▒▒▒║<br>╠=====╦=====╦=====╦=======╣<br>║&nbsp;
<input type="button" value="  7   " class="inputBox" onClick="javascript: juncao(7)">║
<input type="button" value="  8   " class="inputBox" onClick="javascript: juncao(8)">║
<input type="button" value="  9   " class="inputBox" onClick="javascript: juncao(9)">║
<input type="button" value="  /    "  class="inputBox" onClick="javascript: dividir()">&nbsp;&nbsp;&nbsp;&nbsp;║<br>╠=====╬=====╬=====╬=======╣<br>║&nbsp;
<input type="button" value="  4   " class="inputBox" onClick="javascript: juncao(4)">║
<input type="button" value="  5   " class="inputBox" onClick="javascript: juncao(5)">║
<input type="button" value="  6   " class="inputBox" onClick="javascript: juncao(6)">║
<input type="button" value="  *    " class="inputBox" onClick="javascript: multiplicar()">&nbsp;&nbsp;&nbsp;&nbsp;║<br>╠=====╬=====╬=====╬=======╣<br>║&nbsp;
<input type="button" value="  1   " class="inputBox" onClick="javascript: juncao(1)">║
<input type="button" value="  2   " class="inputBox" onClick="javascript: juncao(2)">║
<input type="button" value="  3   " class="inputBox" onClick="javascript: juncao(3)">║
<input type="button" value="  -    " class="inputBox" onClick="javascript: diminuir()">&nbsp;&nbsp;&nbsp;&nbsp;║<br>╠=====╬=====╬=====╬=======╣<br>║&nbsp;
<input type="button" value="   0  " class="inputBox" onClick="javascript: juncao(0)">║
<input type="button" value="   .   " class="inputBox" onClick="javascript: juncao('.')">║
<input type="button" value="   =  " class="inputBox" onClick="javascript: igual()">║
<input type="button" value="  +   " class="inputBox" onClick="javascript: somar()">&nbsp;&nbsp;&nbsp;║<br>╠=====╩=====╩=====╩=======╣<br>║&nbsp;
<input type="button" value="              Limpar            "  onClick="javascript: Limpar()" class="inputesp">&nbsp;&nbsp;║<br>
╠========╦=======╦========╣<br>║&nbsp;&nbsp;
<input type="button" value="   x^2  " class="inputBox" onClick="javascript: elevado2()">║
<input type="button" value="   x^3  " class="inputBox" onClick="javascript: elevado3()">║
<input type="button" value="   x^y  " class="inputBox" onClick="javascript: elevadoy()">&nbsp;&nbsp;&nbsp;║<br>
╠========╩=======╩========╣<br>
║&nbsp;&nbsp;
<input type="button" value="   1/x  " class="inputBox" onClick="javascript: divide1()">║
<input type="button" value="   +/-  " class="inputBox"  onClick="javascript: inverter()">&nbsp;║
<input type="button" value="    pi    " class="inputBox" onClick="c1.value = 1.14">&nbsp;&nbsp;&nbsp;║<br>
╚========╩=======╩========╝<br>
</center>
============================================================================================================<br>
<marquee><h1><script>document.write('Seja Bem Vindo ',namevi,' a Calculadora Virtual');</script></h1></marquee>
============================================================================================================

</html>