How can I add script to Dynamics Crm main.aspx page?

Question

I try to disable specific user login using javascript. If the user tries to login, I will close the window. I saw some examples about adding scripts to main.aspx page but it did not work.

Please help.

Answer 1

I solved it. I added

<script>

this.onload=function(){
if(USER_GUID.indexOf("{D9D73FD0-F377-E511-85D2-000C29458CDD}") > -1)
{
 window.location.replace(null);
}
}   
</script>

before the closing body tag in main.aspx