Not stopping on submit

Morning,

I have a function below, that works to check things but instead of going back to the field to fix it's going to submit instead. Any thoughts you have would be appreciated.

Thanks

Laura

<SCRIPT LANGUAGE="JavaScript">
function verify() {
var count=0;
var msg="";
for(i=0;i<=4;i++)
{
if(document.DataEntry.elements[i].value=="")
{
count=1;
msg=msg+"n"+document.DataEntry.elements[i].name;
}
else if((i>3) && (count==0))
{
return true;

}
}
for(i=0;i<=4;i++)
{
if(document.DataEntry.elements[i].value=="")
{
alert("PLEASE FILL IN THE FOLLOWING FIELD(S)n "+msg);
document.DataEntry.elements[i].focus();
return false;
}
}
}
//-->
</script>

how do you call this function?
onSubmit="return verify();"
should work.

Yup thats what I have.