$ 0 0 [php] <html> <head> <script type="text/javascript"> function vali() { if(document.myform.FirstName.value=="") { alert("Please enter the FirstName"); document.myform.FirstName.focus(); return false; } } </script> </head> <form method="post" name="myform" onsubmit="return vali();"> Name : <input type="text" name="FirstName" /> <input type="submit" value="Submit" /> </form> </html> [/php] Output: Name :