function colorbackground(field) {
	$(field).parents('div.row').css ({'background-color':'#F3D200'});
	$(field).focus();
}	

$(function(){
	$('#membership_cats').change (function () {
		$('#membership_cost').val('');
		$('#membership_types').load('/wp-content/themes/cdrc/joinform_ajax.php?type='+$(this).val());
	});
	
	$('#membership').live ('change', function () {
		var memb_cost = $("#membership option:selected").attr('title');
		$('#membership_cost').val(memb_cost);
	});

	$('#field16').change (function () {
		$('#adr_functions').load('/wp-content/themes/cdrc/joinform_ajax.php?type='+$(this).val());
	});

	
	
});

function format_string (number_item){
	var txt = new String(number_item);
	var mystring = txt.split('.');
	mystring[1] = mystring[1].substr(0,2);
	return mystring[0] + '.' + mystring[1];
}

$(function(){
	$('.dropwrap').hover (shownav, hidenav);
	
	function shownav (){
		$('.dropdown', $(this)).show(); 
		$('.navtitle', $(this)).css({'text-decoration':'none'})
	}
	
	function hidenav (){
		$('.dropdown', $(this)).hide();
		$('.navtitle', $(this)).css({'text-decoration':'none'})
	}
});

function validateEmail (emailStr) {
	var checkTLD=1;
	var knownDomsPat=/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum)$/;
	var emailPat=/^(.+)@(.+)$/;
	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;
}