Cross-Browser Compatability

[Manjunath85]

Hi All,
When i hit the EnterKey on password field, at that time it has to redirect into the home page, but it not redirecting.Below JS code work fine with all the browsers , Except IE11.
need help.
Thanks i advace.

<script language="JavaScript">
function myTranslate(event)
{
var event = event || window.event;
 
if(event== 13)
  {
    submitForm('', 'mainForm');    
  } 
 
}
</script>
 
<form>
<input id = "password"  maxlength="50" type = "password"
name = "password" width = "250px" onkeypress="javascript:myTranslate(event)"/>
</form>