Checkbox Game BODY

<script language="JavaScript">
document.write("<form><center>")
document.write('<input type="text" value="0" ');
document.write('name="num" size=10 onFocus="this.blur()"><br />')
document.write("<hr size=1 width=40%>")
for (var i = 0; i < 10; ++i) {
for (var j = 0; j < 10; ++j) {
document.write('<input type="checkbox" ');
document.write('onClick="display(this)">')}
document.write("<br />")}
document.write("<hr size=1 width=40%>")
document.write('<input type="button" value="restart" ');
document.write('onClick="restart(this.form)">')
document.write("</center></form>")
</script>