/*
 * HTML5 Forms Chapter JavaScript Library
 * http://thecssninja.com/javascript/H5F
 *
 * Copyright (c) 2010 Ryan Seddon - http://thecssninja.com/
 * Dual-licensed under the BSD and MIT licenses.
 * http://thecssninja.com/H5F/license.txt
 */

var H5F = H5F || {};(function(d){var field=d.createElement("input"),emailPatt=new RegExp("([a-z0-9_.-]+)@([0-9a-z.-]+).([a-z.]{2,6})","i"),urlPatt=new RegExp("^http:\/\/","i"),usrPatt, curEvt,args;H5F.setup=function(form,settings) {var isCollection=!form.nodeType || false;var opts={validClass : "valid",invalidClass : "error",requiredClass : "required"};if(typeof settings==="object") {for (var i in opts) {if(typeof settings[i]==="undefined") {settings[i]=opts[i];}}}args=settings || opts;if(isCollection) {for(var k=0,len=form.length;k<len;k++) {H5F.validation(form[k]);}}else {H5F.validation(form);}};H5F.validation=function(form) {var f=form.elements,flen=f.length,isRequired;H5F.listen(form,"invalid",H5F.checkField,true);H5F.listen(form,"blur",H5F.checkField,true);H5F.listen(form,"input",H5F.checkField,true);H5F.listen(form,"focus",H5F.checkField,true);if(!H5F.support()) {form.checkValidity=function(e,f) { H5F.checkValidity("",form);};while(flen--) {isRequired=!!(f[flen].attributes["required"]);if(f[flen].nodeName!=="FIELDSET" && isRequired) {H5F.validity(f[flen]);}}}};H5F.validity=function(el) {var elem=el,missing=H5F.valueMissing(elem),type=elem.getAttribute("type"),pattern=elem.getAttribute("pattern"),placeholder=elem.getAttribute("placeholder"),isType= /^(email|url|password)$/i,fType=((isType.test(type)) ? type : ((pattern) ? pattern : false)),patt=H5F.pattern(elem,fType),step=H5F.range(elem,"step"),min=H5F.range(elem,"min"),max=H5F.range(elem,"max");elem.validity={patternMismatch: patt,rangeOverflow: max,rangeUnderflow: min,stepMismatch: step,valid: (!missing && !patt && !step && !min && !max),valueMissing: missing};if(placeholder && curEvt!=="input") { H5F.placeholder(elem);}elem.checkValidity=function(e,el) { H5F.checkValidity(e,elem);};};H5F.checkField=function(e) {var el=H5F.getTarget(e) || e,events= /^(input|focusin|focus)$/i;curEvt = e.type;if(!H5F.support()) { H5F.validity(el);}if(el.validity.valid) {H5F.removeClass(el,args.invalidClass);H5F.removeClass(el,args.requiredClass);H5F.addClass(el,args.validClass);} else if(!events.test(curEvt)) {if(el.validity.valueMissing) {H5F.removeClass(el,args.invalidClass);H5F.removeClass(el,args.validClass);H5F.addClass(el,args.requiredClass);} else{H5F.removeClass(el,args.validClass);H5F.removeClass(el,args.requiredClass);H5F.addClass(el,args.invalidClass);}} else if(el.validity.valueMissing) {H5F.removeClass(el,args.requiredClass);H5F.removeClass(el,args.invalidClass);H5F.removeClass(el,args.validClass);}};H5F.checkValidity = function (e,el) {var f, ff, isRequired, invalid = false;if(el.nodeName === "FORM") {f = el.elements;for(var i = 0,len = f.length;i < len;i++) {ff = f[i];isRequired = !!(ff.attributes["required"]);if(ff.nodeName !== "FIELDSET" && isRequired) {H5F.checkField(ff);if(!ff.validity.valid && !invalid) {ff.focus();invalid = true;}}}} else {H5F.checkField(el);return el.validity.valid;}};H5F.support = function() {return (H5F.isHostMethod(field,"validity") && H5F.isHostMethod(field,"checkValidity"));};H5F.pattern = function(el, type) {if(type==="email") {return !emailPatt.test(el.value);} else if(type==="url") {return !urlPatt.test(el.value);} else if(!type || type === "password") {return false;} else {usrPatt = new RegExp(type);return !usrPatt.test(el.value);}};H5F.placeholder = function(el) {var placeholder = el.getAttribute("placeholder"),focus = /^(focus|focusin)$/i,node= /^(input|textarea)$/i,isNative = !!("placeholder" in field);if(!isNative && node.test(el.nodeName)) {if(el.value === "") {el.value = placeholder;} else if(el.value === placeholder && focus.test(curEvt)) {el.value = "";}}};H5F.range = function(el,type) {var min=parseInt(el.getAttribute("min"),10) || 0,max=parseInt(el.getAttribute("max"),10) || false,step=parseInt(el.getAttribute("step"),10) || 1,val=parseInt(el.value,10),mismatch = (val-min)%step;if(!H5F.valueMissing(el) && !isNaN(val)) {if(type==="step") {return (el.getAttribute("step")) ? (mismatch !== 0) : false;} else if(type==="min") {return (el.getAttribute("min")) ? (val < min) : false;} else if(type === "max") {return (el.getAttribute("max")) ? (val > max) : false;}}else if(el.getAttribute("type")==="number") { return true;}else {return false;}};H5F.required = function(el) {var required = !!(el.attributes["required"]);return (required) ? H5F.valueMissing(el) : false;};H5F.valueMissing = function(el) {var placeholder = el.getAttribute("placeholder");return !!(el.value==="" || el.value===placeholder);};/* Util methods */H5F.listen = function (node,type,fn,capture) {if(H5F.isHostMethod(window,"addEventListener")) {node.addEventListener(type,fn,capture);}else if(H5F.isHostMethod(window,"attachEvent") && typeof window.event!=="undefined") {if(type==="blur") {type="focusout";}else if(type==="focus") {type="focusin";}node.attachEvent("on"+type,fn);}};H5F.preventActions=function(evt) {evt=evt || window.event;if(evt.stopPropagation && evt.preventDefault) {evt.stopPropagation();evt.preventDefault();} else{evt.cancelBubble=true;evt.returnValue=false;}};H5F.getTarget = function (evt) {evt = evt || window.event;return evt.target || evt.srcElement;};H5F.addClass=function(e,c) {var re;if(!e.className) {e.className = c;}else {re = new RegExp('(^|\\s)'+c+'(\\s|$)');if (!re.test(e.className)) {e.className+=' '+c;}}};H5F.removeClass=function(e,c) {var re,m;if(e.className) {if(e.className == c) {e.className='';}else {re=new RegExp('(^|\\s)'+c+'(\\s|$)');m=e.className.match(re);if(m && m.length==3) {e.className=e.className.replace(re,(m[1] && m[2])?' ':'');}}}};H5F.isHostMethod=function(o,m) {var t=typeof o[m],reFeaturedMethod=new RegExp('^function|object$','i');return !!((reFeaturedMethod.test(t) && o[m]) || t=='unknown');};})(document);