alguien sabe por que y como evitarlo?
Código:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /> <title>Documento sin título</title> </head> <body> <script type="text/javascript"> function a() { document.getElementById("textfield5").value = "qwerty"; } </script> <form name="" action="" onsubmit="alert('ok submit'); return false;" enctype="application/x-www-form-urlencoded"> <table border="1" cellspacing="0" cellpadding="0"> <tr> <td>a</td> <td><input type="text" name="textfield1" /></td> <td><input type="image" name="imageField" src="img.png" width="40" height="40" onclick="a()" /></td> <td> </td> </tr> <tr> <td>b</td> <td><input type="text" name="textfield2" /></td> <td><input type="submit" onclick="alert('click submit');" /></td> <td> </td> </tr> <tr> <td>c</td> <td><input type="text" name="textfield3" /></td> <td> </td> <td> </td> </tr> <tr> <td>d</td> <td><input type="text" name="textfield4" /></td> <td> </td> <td> </td> </tr> <tr> <td>e</td> <td><input type="text" name="textfield5" /></td> <td> </td> <td> </td> </tr> </table> </form> </body> </html>