function seo_string(field_name,str,dirlist,dirchk)
{
	dir_pat=RegExp("^("+dirlist.replace(/,/g,"|")+")$","i");
	dir_str=dirlist.replace(/,/g,", ");
	if(str.match(/[\.\/\?& ]/))
		return (field_name+" must not contain \.\/\?&  characters");
	else if(dirchk==true && str.match(dir_pat) )
		return (field_name+" does not allow this value. Try appending /removing some characters to the value");
	else
		return false;	
}

function sbconvert_toseo(title,seo)
{
	a=title.value.replace(/[\.\/\?& ]+/g,"_");
	seo.value=a;
}

function sbiz_emailCheck (sbiz_emailStr) {
var sbiz_emailPat=/^(.+)@(.+)$/
var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"
var validChars="\[^\\s" + specialChars + "\]"
var quotedUser="(\"[^\"]*\")"
var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/
var atom=validChars + '+'
var word="(" + atom + "|" + quotedUser + ")"
var userPat=new RegExp("^" + word + "(\\." + word + ")*$")
var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$")
var matchArray=sbiz_emailStr.match(sbiz_emailPat)
if (matchArray==null) {
	alert("Email Address seems incorrect (check @ and .'s)")
	return false
}
var user=matchArray[1]
var domain=matchArray[2]
if (user.match(userPat)==null) {
    alert("The username doesn't seem to be valid")
    return false
}
var IPArray=domain.match(ipDomainPat)
if (IPArray!=null) {
    // this is an IP address
	  for (var i=1;i<=4;i++) {
	    if (IPArray[i]>255) {
	        alert("Destination IP address is invalid")
		return false
	    }
    }
    return true
}
var domainArray=domain.match(domainPat)
if (domainArray==null) {
	alert("The domain name doesn't seem to be valid")
    return false
}
var atomPat=new RegExp(atom,"g")
var domArr=domain.match(atomPat)
var len=domArr.length
if (domArr[domArr.length-1].length<2 || 
    domArr[domArr.length-1].length>3) {
   alert("The address must end in a three-letter domain, or two letter country")
   return false
}
if (len<2) {
   var errStr="This address is missing a hostname"
   alert(errStr)
   return false
}
return true;
}