javascript to validate a domain name in index, domainchecker

[Thembi]

this is my code:

 

<script>

 

function frmValidate()

{

 

var val=document.frmDomin.name.value;

if (/^[a-zA-Z0-9][a-zA-Z0-9-]{1,61}[a-zA-Z0-9](?:\.[a-zA-Z]{2,})+$/.test(val)){

alert("Valid Domain Name");

return true;

}

else

{

alert("Enter Valid Domain Name");

val.name.focus();

return false;

}

}

</script>

 

 

code above validates a domain name then pop up a javascript window when button submit is clicked on my separate html form , but when i take the code to header.tpl for an example it has compatibility issues , when i put the {literal} tags around my code i have no errors but it doesn't work

 

I know whmcs has its own domain validation , but i would like to validate on the same page (for an example if i am in the index page i would like to validate there so that if the user`s domain is not valid a javascript window will popup and i wond be taken to domainchecker where i will see the error message )

 

is there anyone who can help me