Подскажите пожалуйста,как можно запустить скрипт не нажимая кнопок а после запускался сам через некоторый интервал времени.
<Script lang="JavaScript">
function calculator(form) {
c1 = eval(form.c1.value);k1 = eval(form.k1.value);c2 = eval(form.c2.value);
k2= eval(form.k2.value);c3 = eval(form.c3.value);k3 = eval(form.k3.value);
c4 = eval(form.c4.value);k4 = eval(form.k4.value);c5 = eval(form.c5.value);
k5 = eval(form.k5.value);c6 = eval(form.c6.value);k6 = eval(form.k6.value);
c7 = eval(form.c7.value);k7 = eval(form.k7.value);c8 = eval(form.c8.value);
k8 = eval(form.k8.value);c9 = eval(form.c9.value);k9 = eval(form.k9.value);
c10 = eval(form.c10.value);k10 = eval(form.k10.value);
s=c1*k1+c2*k2+c3*k3+c4*k4+c5*k5+c6*k6+c7*k7+c8*k8+ c9*k9+c10*k10;
form.total.value = s;
}
</script>
<form>
<table >
<tbody>
<tr>
<td><strong><select id="c1"> <option>1945</option> </select> * кол-во<select id="k1"> <option>0</option> <option>1</option> <option>2</option><option>3</option> <option>4</option> <option>5</option><option>6</option> <option>7</option> <option>8</option><option>9</option> <option>10</option> <option>11</option></select></strong></td>
</tr>
<tr>
<td><strong><select id="c2"> <option>500</option> </select> * кол-во<select id="k2"> <option>0</option> <option>1</option> <option>2</option><option>3</option> <option>4</option> <option>5</option><option>6</option> <option>7</option> <option>8</option><option>9</option> <option>10</option> <option>11</option></select></strong></td>
</tr>
<tr>
<td><strong><select id="c3"> <option>600</option> </select> * кол-во<select id="k3"> <option>0</option> <option>1</option> <option>2</option><option>3</option> <option>4</option> <option>5</option><option>6</option> <option>7</option> <option>8</option><option>9</option> <option>10</option> <option>11</option></select></strong></td>
</tr>
<tr>
<td><strong><select id="c4"> <option>250</option> </select> * кол-во<select id="k4"> <option>0</option> <option>1</option> <option>2</option><option>3</option> <option>4</option> <option>5</option><option>6</option> <option>7</option> <option>8</option><option>9</option> <option>10</option> <option>11</option></select></strong></td>
</tr>
<tr>
<td><strong><select id="c5"> <option>300</option> </select> * кол-во<select id="k5"> <option>0</option> <option>1</option> <option>2</option><option>3</option> <option>4</option> <option>5</option><option>6</option> <option>7</option> <option>8</option><option>9</option> <option>10</option> <option>11</option></select></strong></td>
</tr>
<tr>
<td><strong><select id="c6"> <option>500</option> </select> * кол-во<select id="k6"> <option>0</option> <option>1</option> <option>2</option><option>3</option> <option>4</option> <option>5</option><option>6</option> <option>7</option> <option>8</option><option>9</option> <option>10</option> <option>11</option></select></strong></td>
</tr>
<tr>
<td><strong><select id="c7"> <option>600</option> </select> * кол-во<select id="k7"> <option>0</option> <option>1</option> <option>2</option><option>3</option> <option>4</option> <option>5</option><option>6</option> <option>7</option> <option>8</option><option>9</option> <option>10</option> <option>11</option></select></strong></td>
<td><span style="color: #ffff00;"><input onclick="calculator(this.form)" value="Рассчитать" type="button"></span></td>
</tr>
<tr>
<td><strong><select id="c8"> <option>700</option> </select> * кол-во<select id="k8"> <option>0</option> <option>1</option> <option>2</option><option>3</option> <option>4</option> <option>5</option><option>6</option> <option>7</option> <option>8</option><option>9</option> <option>10</option> <option>11</option></select></strong></td>
<td style="text-align: left;"><strong>Результат</strong></td>
</tr>
<tr>
<td><strong><select id="c9"> <option>800</option> </select> * кол-во<select id="k9"> <option>0</option> <option>1</option> <option>2</option><option>3</option> <option>4</option> <option>5</option><option>6</option> <option>7</option> <option>8</option><option>9</option> <option>10</option> <option>11</option></select></strong></td>
<td><span style="color: #ffff00;"><strong><input name="total" type="text"> </strong></span></td>
</tr>
<tr>
<td><strong><select id="c10"> <option>600</option> </select> * кол-во<select id="k10"> <option>0</option> <option>1</option> <option>2</option><option>3</option> <option>4</option> <option>5</option><option>6</option> <option>7</option> <option>8</option><option>9</option> <option>10</option> <option>11</option></select></strong></td>
<td><span style="color: #ffff00;"><input value="Сброс" type="reset"></span><br><br> </td>
</tr>
<tr>
</tbody>
</table>
</form>
<script>
document.getElementById('total.value = s').onclick();
</script>
