function emailCheck (emailStr) {

var checkTLD=1;
var knownDomsPat=/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum|inl)$/;
var emailPat=/^(.+)@(.+)$/;
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=emailStr.match(emailPat);
if (matchArray==null) {
//alert("Email address seems incorrect (check @ and .'s)");
return false;
}
var user=matchArray[1];
var domain=matchArray[2];

for (i=0; i<user.length; i++) {
if (user.charCodeAt(i)>127) {
//alert("Ths username contains invalid characters.");
return false;
   }
}
for (i=0; i<domain.length; i++) {
if (domain.charCodeAt(i)>127) {
//alert("Ths domain name contains invalid characters.");
return false;
   }
}

if (user.match(userPat)==null) {

//alert("The username doesn't seem to be valid.");
return false;
}

var IPArray=domain.match(ipDomainPat);
if (IPArray!=null) {

for (var i=1;i<=4;i++) {
if (IPArray[i]>255) {
//alert("Destination IP address is invalid!");
return false;
   }
}
return true;
}
 
var atomPat=new RegExp("^" + atom + "$");
var domArr=domain.split(".");
var len=domArr.length;
for (i=0;i<len;i++) {
if (domArr[i].search(atomPat)==-1) {
//alert("The domain name does not seem to be valid.");
return false;
   }
}

if (checkTLD && domArr[domArr.length-1].length!=2 && 
domArr[domArr.length-1].search(knownDomsPat)==-1) {
//alert("The address must end in a well-known domain or two letter " + "country.");
return false;
}

if (len<2) {
//alert("This address is missing a hostname!");
return false;
}

return true;
}



function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}


function MM_validateForm() { //v4.0
  var i,p,q,nm,test,num,min,max,errors='',args=MM_validateForm.arguments;
  var er = '';
  for (i=0; i<(args.length-2); i+=3) { test=args[i+2]; val=MM_findObj(args[i]);
    if (val) { nm=val.name; if ((val=val.value)!="") {
      er+='&'+nm+'1='+val;
	  if (test.indexOf('isEmail')!=-1) { 
	   if (emailCheck(val) == false) {
 errors = errors + "&" + nm + "=f";
  }
      } else if (test!='R' && test!='N') {
        if (isNaN(val)) errors+='&'+nm+'=f';
        if (test.indexOf('inRange') != -1) { p=test.indexOf(':');
          min=test.substring(8,p); max=test.substring(p+1);
          if (val<min || max<val) errors+='&'+nm+'=f';
    } } } else if (test.charAt(0) == 'R') errors += '&'+nm+'=f'; }
  } 


  
  if (errors) location.href='send_to_friend.asp?wron=t'+errors+er;
  document.MM_returnValue = (errors == '');
}


function disableForm(theform) {
if (document.all || document.getElementById) {
for (i = 0; i < theform.length; i++) {
var tempobj = theform.elements[i];
if (tempobj.type.toLowerCase() == "submit" || tempobj.type.toLowerCase() == "reset")
tempobj.disabled = true;
}
return true;
}
else {
return false;
   }
}