function shoepic(image) {
	document['shoeBig'].src = image;
}

function swapDisabled(element) {
	alert(element.disabled);
	if (!IE4) return;
	var currentState = element.disabled;
	var newState = !currentState;
	if (newState != currentState) element.disabled = newState;
}

function validPassword(formField,fieldLabel,required) {
	var result = true;
	if (required && !validRequired(formField,fieldLabel))
	result = false;
	if (result && (formField.value.length < 6)) {
		alert("Password must be at least 6 characters!");
		formField.focus();
		result = false;
	}
	return result;
}

function passwordMatch(theForm) {
	var result = true;
	if (theForm.password1.value!=theForm.password2.value) {
		alert('Passwords do not match!.');
		theForm.password.focus();
		result = false;
	}
	return result ;
}

function fieldsMatch(formField1, formField2, fieldLabel) {
	var result = true;
	if (formField1.value!=formField2.value) {
		alert(fieldLabel + ' do not match!.');
		formField1.focus();
		result = false;
	}
	return result;
}

function isEmailAddr(email) {
	var result = false;
	var theStr = new String(email);
	var index = theStr.indexOf("@");
	if (index > 0) {
		var pindex = theStr.indexOf(".",index);
		if ((pindex > index+1) && (theStr.length > pindex+1))
		result = true;
	}
	return result;
}

function validRequired(formField,fieldLabel) {
	var result = true;
	if (formField.value == "") {
		alert('Please enter a value for the "' + fieldLabel +'" field.');
		formField.focus();
		result = false;
	}
	return result;
}

function allDigits(str) {
	return inValidCharSet(str,"0123456789");
}

function inValidCharSet(str,charset) {
	var result = true;
	// Note: doesn't use regular expressions to avoid early Mac browser bugs
	for (var i=0;i<str.length;i++)
	if (charset.indexOf(str.substr(i,1))<0) {
		result = false;
		break;
	}
	return result;
}

function validEmail(formField,fieldLabel,required) {
	var result = true;
	if (required && !validRequired(formField,fieldLabel))
	result = false;
	if (result && ((formField.value.length < 3) || !isEmailAddr(formField.value))) {
		alert("Please enter a complete email address in the form: yourname@yourdomain.com");
		formField.focus();
		result = false;
	}
	return result;
}


var dtCh = "/";
var minYear = 1900;
var maxYear = 2006;
function isInteger(s){
	var i;
	for (i = 0; i < s.length; i++){
		// Check that current character is number.
		var c = s.charAt(i);
		if (((c < "0") || (c > "9"))) return false;
	}
	// All characters are numbers.
	return true;
}

function stripCharsInBag(s, bag){
	var i;
	var returnString = "";
	// Search through string's characters one by one.
	// If character is not in bag, append to returnString.
	for (i = 0; i < s.length; i++){
		var c = s.charAt(i);
		if (bag.indexOf(c) == -1) returnString += c;
	}
	return returnString;
}

function daysInFebruary (year){
	// February has 29 days in any year evenly divisible by four,
	// EXCEPT for centurial years which are not also divisible by 400.
	return (((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28 );
}
function DaysArray(n) {
	for (var i = 1; i <= n; i++) {
		this[i] = 31
		if (i==4 || i==6 || i==9 || i==11) {this[i] = 30}
		if (i==2) {this[i] = 29}
   }
   return this
}

function validDate(formField){
	var dtStr = formField.value;
	var daysInMonth = DaysArray(12)
	var pos1=dtStr.indexOf(dtCh)
	var pos2=dtStr.indexOf(dtCh,pos1+1)
	var strMonth=dtStr.substring(0,pos1)
	var strDay=dtStr.substring(pos1+1,pos2)
	var strYear=dtStr.substring(pos2+1)
	strYr=strYear
	if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1)
	if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1)
	for (var i = 1; i <= 3; i++) {
		if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1)
	}
	month=parseInt(strMonth)
	day=parseInt(strDay)
	year=parseInt(strYr)
	if (pos1==-1 || pos2==-1){
		alert("The date format should be : mm/dd/yyyy")
		formField.focus();
		return false
	}
	if (strMonth.length<1 || month<1 || month>12){
		alert("Please enter a valid month")
		formField.focus();
		return false
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		alert("Please enter a valid day")
		formField.focus();
		return false
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		alert("Please enter a valid 4 digit year between "+minYear+" and "+maxYear)
		formField.focus();
		return false
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		alert("Please enter a valid date")
		formField.focus();
		return false
	}
	return true
}

function validURL(formField, fieldLabel) {
	var result = true;
	/*
	var urlRegxp = /^(http:\/\/www.|https:\/\/www.|ftp:\/\/www.|www.){1}([\w]+)(.[\w]+){1,2}$/;
	if (urlRegxp.test(formField) != true) {
		alert('Please enter a complete URL in the field "' + fieldLabel +'" (ex: http://www.yourdomain.com)');
		formField.focus();
		result = false;
	}
	*/
	return result;
}

function validateForm(theForm) {
	if (!validRequired(theForm.username,"Username"))
		return false;
	if (!alphanumeric(theForm.username.value)) {
		alert('The username "' + theForm.username.value + '" contains invalid characters.');
		theForm.username.focus();
		return false;
	}
	if (!uniqueUser(theForm.username))
		return false;
	if (!validRequired(theForm.password1,"Password"))
		return false;
	if (!validRequired(theForm.password2,"Password Confirmation"))
		return false;
	if (!validRequired(theForm.email,"Email"))
		return false;
	if (!validEmail(theForm.email,"Email Address",true))
		return false;
	if (!uniqueEmail(theForm.email))
		return false;
	if (!validPassword(theForm.password1,"Password",true))
		return false;
	if (!fieldsMatch(theForm.password1, theForm.password2,"Passwords"))
		return false;
	if (theForm.birthday.value != '') {
		if (!validDate(theForm.birthday))
			return false;
	}
	if (theForm.url.value != '') {
		if(!validURL(theForm.url, 'web site'))
			return false;
	}
	return true;
}

function validateProfile(theForm) {
	if (theForm.password1.value != "") {
		if (!validPassword(theForm.password1,"Password",true))
			return false;
	}
	if (theForm.password1.value != "" || theForm.password2.value != "") {
		if (!fieldsMatch(theForm.password1, theForm.password2,"Passwords"))
			return false;
	}
	
	if (!validRequired(theForm.email,"Email"))
		return false;
	if (!validEmail(theForm.email,"Email Address",true))
		return false;
	if (theForm.url.value != '') {
		if(!validURL(theForm.url, 'web site'))
			return false;
	}		
	if (theForm.birthday.value != '') {
		if (!validDate(theForm.birthday))
			return false;
	}
	return true;
}

function toggleSearch() {
	if (document.getElementById('search').value == "")
		document.getElementById('search').value = "search";
	else if (document.getElementById('search').value == "search") {
		document.getElementById('search').value = "";
		document.getElementById('search').focus();
	}
}

function uniqueUser(username) {
	http.open('POST', '<?=SITE_URL."/validate/user/"?>', false);
	http.onreadystatechange = function() {
		if (http.readyState == 4) {
			if (http.status != 200)
				return true; //ajax not responding - continue
		}
	}

	http.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
	http.send('user=' + username.value);

	if (http.responseText == '0') {
		alert('The username "' + username.value + '" already exists.');
		username.focus();
		return false;
	}
	else
		return true;
}

function uniqueEmail(email) {
	http.open('POST', '<?=SITE_URL."/validate/email/"?>', false);
	http.onreadystatechange = function() {
		if (http.readyState == 4) {
			if (http.status != 200)
				return true; //ajax not responding - continue
		}
	}

	http.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
	http.send('email=' + email.value);

	if (http.responseText == '0') {
		alert('The email "' + email.value + '" already exists.  Please use the "username/password" retrieval form.');
		email.focus();
		return false;
	}
	else
		return true;
}

function alphanumeric(alphane) {
	var numaric = alphane;
	for(var j = 0; j < numaric.length; j++) {
		var alphaa = numaric.charAt(j);
		var hh = alphaa.charCodeAt(0);
		if((hh > 47 && hh<59) || (hh > 64 && hh<91) || (hh > 96 && hh<123)) { }
		else {
			return false;
		}
	}
	return true;
}

function getHTTPObject() {
	var xmlhttp;
	/*@cc_on
	@if (@_jscript_version >= 5)
	try {
		xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
	} catch (e) {
		try {
			xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
		} catch (E) {
			xmlhttp = false;
		}
	}
	@else
		xmlhttp = false;
	@end @*/
	if (!xmlhttp && typeof XMLHttpRequest != 'undefined') {
		try {
			xmlhttp = new XMLHttpRequest();
		} catch (e) {
			xmlhttp = false;
		}
	}
	return xmlhttp;
}
var http = getHTTPObject();