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;
  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)!="") {
      if (test.indexOf('isEmail')!=-1) { p=val.indexOf('@');
        if (p<1 || p==(val.length-1)) errors+='- '+nm+' must contain an e-mail address.\n';
      } else if (test!='R') { num = parseFloat(val);
        if (isNaN(val)) errors+='- '+nm+' must contain a number.\n';
        if (test.indexOf('inRange') != -1) { p=test.indexOf(':');
          min=test.substring(8,p); max=test.substring(p+1);
          if (num<min || max<num) errors+='- '+nm+' must contain a number between '+min+' and '+max+'.\n';
    } } } else if (test.charAt(0) == 'R') errors += '- '+nm+' is required.\n'; }
  } if (errors) alert('The following error(s) occurred:\n'+errors);
  document.MM_returnValue = (errors == '');
}
function Join_List_Validator(theForm)
			{
						
			  if (theForm.email.value == "")
			  {
			    alert("Please enter your email address.");
			    theForm.email.focus();
			    return (false);
			  }
					
			  if (!(emailCheck (theForm.email.value)))
			  {
			    alert("The email address you entered is invalid.  Please enter an email address in the form of user@domain.");
			    theForm.email.focus();
			    return (false);
			  }

			  return (true);
			}
			
function emailCheck (emailStr) {
			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 +")*$")
			
			/* Begin with the coarse pattern to simply break up user@domain into
			   different pieces that are easy to analyze. */
			var matchArray=emailStr.match(emailPat)
			if (matchArray==null) {
			  /* Too many/few @'s or something; basically, this address doesn't
			     even fit the general mould of a valid e-mail address. */
				//alert("Email address seems incorrect (check @ and .'s)")
				return false
			}
			var user=matchArray[1]
			var domain=matchArray[2]
			
			// See if "user" is valid 
			if (user.match(userPat)==null) {
			    // user is not valid
			    //alert("The username doesn't seem to be valid.")
			    return false
			}
			
			/* if the e-mail address is at an IP address (as opposed to a symbolic
			   host name) make sure the IP address is valid. */
			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
			}
			
			// Domain is symbolic name
			var domainArray=domain.match(domainPat)
			if (domainArray==null) {
				//alert("The domain name doesn't seem to be valid.")
			    return false
			}
			
			/* domain name seems valid, but now make sure that it ends in a
			   three-letter word (like com, edu, gov) or a two-letter word,
			   representing country (uk, nl), and that there's a hostname preceding 
			   the domain or country. */
			
			/* Now we need to break up the domain to get a count of how many atoms
			   it consists of. */
			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>5) {
			   // the address must end in a two letter or three letter word.
			   //alert("The address must end in a three-letter domain, or two letter country.")
			   return false
			}
			
			// Make sure there's a host name preceding the domain.
			if (len<2) {
			   var errStr="This address is missing a hostname!"
			   //alert(errStr)
			   return false
			}
			
			// If we've gotten this far, everything's valid!
			return true;
}