+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">\r
+\r
+<html>\r
+<script Language="JavaScript">\r
+<!-- \r
+function FormValidator()\r
+{\r
+if ((form1.nombre.value.length < 3) || (form1.nombre.value.length > 10))\r
+{\r
+// Build alert box message showing how many characters entered\r
+mesg = "Nombre Invalido!";\r
+alert(mesg);\r
+// Place the cursor on the field for revision\r
+form1.nombre.focus();\r
+// return false to stop further processing\r
+return (false);\r
+}\r
+expresion = "^\\d*$";\r
+regEx = new RegExp(expresion);\r
+if ( !regEx.test(form1.edad.value) )\r
+{\r
+ mesg = "Edad Invalida!";\r
+ alert ( mesg );\r
+ form1.edad.focus();\r
+ return (false);\r
+}\r
+\r
+return (true);\r
+}\r
+-->\r
+</script>\r
+<head>\r
+<title>INGRESO DE DATOS</title>\r
+</head>\r
+<body>\r
+<form name="form1" action="alta.php" method="POST" onsubmit="return FormValidator()">\r
+ Nombre : <input type="text" name="nombre" /><br>\r
+ Edad : <input type="text" name="edad" /><br>\r
+ <input type="submit" value="Enviar">\r
+</form>\r
+</body>\r
+</html>\r