var iBoxWidth, iFSize;
iFSize = 26;

function writeTextField( fname, maxlen, fvalue, callfunc)
{
	if (iBPmix==4) {
		iBoxWidth = iFSize;
	} else {
		(isNS) ? iBoxWidth = iFSize/2 + 1 : iBoxWidth = iFSize;
	}
	return '<input type="text" name="' + fname + '" value="' + fvalue + '" size=' + iBoxWidth + ' maxlength=' + maxlen + ' class="felement" ' + callfunc + '>';
}

function writeTextArea( fname, maxlen, fvalue, callfunc)
{
	(isNS) || (isMoz) ? iBoxWidth = 19 : iBoxWidth = 24;
	return '<textarea name="' + fname + '" rows="5" cols="' + iBoxWidth + '" class="felement">' + fvalue + '</textarea>';
}

function writeHidden( fname, maxlen, fvalue, callfunc) {
	return '<input type="hidden" name="' + fname + '" value="' + fvalue + '">';
}

function emailCheck(thisControl)
{
	var emailStr = thisControl.value
	
	if (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 +")*$")
		var matchArray=emailStr.match(emailPat)
		if (matchArray==null)
		{
			alert("Email address seems incorrect (check @ and .'s)")
			thisControl.select()
	  	thisControl.focus()
			return false
		}
		var user=matchArray[1]
		var domain=matchArray[2]
	
		if (user.match(userPat)==null)
		{
			alert("The username doesn't seem to be valid.")
			thisControl.select()
	  	thisControl.focus()
			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.")
					thisControl.select()
		 	 		thisControl.focus()
					return false				
				}
			}
			return true
		}
	
		var domainArray=domain.match(domainPat)
		if (domainArray==null)
		{
			alert("The domain name doesn't seem to be valid.")
			thisControl.select()
	  	thisControl.focus()
			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.")
			thisControl.select()
	  	thisControl.focus()
			return false
		}
	
		if (len<2)
		{
			var errStr="This address is missing a hostname!"
			alert(errStr)
			thisControl.select()
	  	thisControl.focus()
			return false
		}
		return true;
	} else {
		return false;
	}
}