<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
<SCRIPT LANGUAGE="JavaScript">
<!--
function valid_ObjChkboxes(U)
{
if (U.Obj_chk1.checked == false && U.Obj_chk2.checked == false){
alert"กรุณาเลือกข้อมูลก่อนนะคะ")
return false
}//end of if()
return true
}//end of function valid_ObjChkbox()
//-->
</SCRIPT>
</HEAD>
<BODY>
<form name ="Frm_checkbox" action="closeWin.html" method="POST">
<input type = "checkbox" name= "Obj_chk1" value = "Red"> Red <br>
<input type = "checkbox" name= "Obj_chk2" value = "Blue"> Blue <br><br>
<input type = "submit" name= "btn_chkbox" value = "OK" onClick = "Javascript:return valid_ObjChkboxes(this.form)"> <br>
</form>
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