<html>

<head>
<meta http-equiv="Content-Type" content="text/html; charset=windows-1256">
<title>New Page 1</title>
<script>
var x = new Array(1041033, 1002022 ,2021203 ,5301023 ,5011023 ,5011033 ,1013032 ,2022303 ,2022312 ,5012113 ,5012123 ,
5032113 ,1014042 ,2022403 ,5012133 ,5012143 ,5022113 ,2023503 ,5013113 ,5013013 ,5023113 ,5023123 ,2023603 ,2023613,
5013213,5013223,5033123,5014013,5014213,5014313 ,5014023 ,5014113 ,5014323,5014223,5014233,5014243,5014333,5024113,5014343);
function check(){
	var value=document.form1.needcourse1.value;
	var isFound=false;
	if(value){
		for(i=0;i<x.length;i++){
			if(x[i]==value){
				isFound=true;
				alert('  ');
				break;
			}
		}
		if(!isFound){
			alert("   ");
			document.form1.needcourse1.value='';
		}
	}else{
		alert("  ");
	}
}

function isNumber(evt) {
    evt = (evt) ? evt : window.event
    var charCode = (evt.which) ? evt.which : evt.keyCode
    if (charCode > 31 && (charCode < 48 || charCode > 57))return false;
    return true;
}
</script>
</head>

<body>
<br><br><br><br><br>
<form method="POST" name="form1" >
	<p><input type="text" name="needcourse1" size="20" onkeypress="return isNumber(event);">
	<input type="button" value="Button" name="B3" onclick="check();"></p>

</form>

</body>

</html>