function fstcheck()
{
temp=form.XXXX.value; for (nIndex=0; nIndex<temp.length; nIndex++)
{
cCheck = temp.charAt(nIndex);
if (!(IsDigit(cCheck)))
{
alert("Please input integer in the required number box");
form.XXXX.focus();
return false;
}
}
}
function IsDigit(cCheck)
{
return (('0'<=cCheck) && (cCheck<='9'));
}
{
temp=form.XXXX.value; for (nIndex=0; nIndex<temp.length; nIndex++)
{
cCheck = temp.charAt(nIndex);
if (!(IsDigit(cCheck)))
{
alert("Please input integer in the required number box");
form.XXXX.focus();
return false;
}
}
}
function IsDigit(cCheck)
{
return (('0'<=cCheck) && (cCheck<='9'));
}
<script>
function toSubmit(){
var obj=document.getElementById("t1")
if(parseInt(obj.value)!=obj.value){
alert("not integer!")
obj.focus()
obj.select()
return false
}
}</script>