function check() {
if (document.domain_search.domain.value=="") 
{
alert("You have not entered a domain name to search for, please try agian");
document.domain_search.domain.focus();return false
}
if (document.domain_search.domain.value!="") 
{if (document.domain_search.domain.value.indexOf("@")!=-1) 
{alert("Sorry, the @ symbol is NOT valid, please remove");
document.domain_search.domain.focus();return false}
}
if (document.domain_search.domain.value!="") 
{if (document.domain_search.domain.value.indexOf(".")!=-1) 
{alert("Please make sure that you have NOT entered WWW. before your chosen domain OR the suffix i.e .CO.UK after, there are boxes to tick below so you can indicate the type of domains you require");
document.domain_search.domain.focus();return false}
}
if (document.domain_search.domain.value!="") 
{if (document.domain_search.domain.value.length<3) 
{alert("Sorry, your domain name must be at least 3 characters in length");
document.domain_search.domain.focus();return false}
}
}