var total_msg = '';
var any_error = false;
var first = true;	//Track if the first access of checkError

// Initialize the validation
function init(form,target) {
	total_msg = '';
	any_error = false;
	if (!first) {	//If we've run checkError before, remove the previous errors
		document.getElementById(target).removeChild(document.getElementById(target).lastChild);
	} 
}

// Resets validation history, sets global variable 'first' to true
function resetValidation(){
        first = true;
}

//Display all error messages
// returns true if no error, false if there are errors
function checkErrors(form,target,alert_msg) {
		first = false;
		if (any_error) {
			errorTable = document.createElement("table");
			        errorTable.id = "errorTable";
                        errorTB = document.createElement("tbody");
			errorTR = document.createElement("tr");
			errorTD = document.createElement("td");
				errorTD.style.border = "1px solid #c00";
				errorTD.style.padding = "6px";
			errorBold = document.createElement("b");
				errorBold.style.color = "#c00";

			//If we received a universal alert message use that instead of the loop 
                        if (alert_msg != "" && typeof(alert_msg) != 'undefined') {
                               alert_msg = alert_msg.replace(/\|/g, "");
                               msg = document.createTextNode(alert_msg);
			       errorBold.appendChild(msg);
                        } else {
    			    //Loop to display each error message
			    var msgArray = total_msg.split("|");

			    for (i=0;i < msgArray.length;i++) {
				msg = document.createTextNode(msgArray[i]);
				errorBold.appendChild(msg);
				errorBold.appendChild(document.createElement("br"));
			    }
			    errorBold.removeChild(errorBold.lastChild);  //Remove trailing break
                        }

			errorTD.appendChild(errorBold);
			errorTR.appendChild(errorTD);
			errorTB.appendChild(errorTR);
			errorTable.appendChild(errorTB);
			document.getElementById(target).appendChild(errorTable);
                        window.scroll(0,0);
			return false;
		}

	//document.styleSheets[0].deleteRule(0);
	return true;
}

function validate() {
	var args = validate.arguments;

	//Standard arguments
	var type = args[0];
	var field = args[1];
	var alert_msg = args[2];

	var error = false;	//Is there an error with this validation?
	var highligh = false;	//Should this field be highlighed if an error is found?

	switch(type) {
	
		case "content":
			var highlight = true;
			var default_msg = "Please fill in all required fields.";
			if (field.value == "") {
				error = true;
			}
			break;


		case "length":
                case "maxlength":
			max_length = (args[3]?args[3]:1000); 
			var highlight = true;
			var default_msg = "Please enter less than " + max_length + " characters. (currently " + field.value.length + " characters)";
			if (field.value.length > max_length) {
				alert_msg = alert_msg.replace(/%NUM_CHARS/i, field.value.length);
				alert_msg = alert_msg.replace(/%MAX_LENGTH/i, max_length);
				error = true;
			}
			break;

                case "minlength":
                        min_length = (args[3]?args[3]:1);
                        var highlight = true;
                        var default_msg = "Please enter more than " + min_length + " characters. (currently " + field.value.length + " characters)";
                        if (field.value.length < min_length) {
                                alert_msg = alert_msg.replace(/%NUM_CHARS/i, field.value.length);
                                alert_msg = alert_msg.replace(/%MIN_LENGTH/i, min_length);
                                error = true;
                        }
                        break;

		case "time":
			var highlight = true;
			var default_msg = "Please enter a valid time.";
			time_pattern = /^[1-9]\:[0-5][0-9]\s*(\AM|PM|am|pm?)\s*$/;
			time_pattern2 = /^[1-1][0-2]\:[0-5][0-9]\s*(\AM|PM|am|pm?)\s*$/;		
			time_pattern3 = /^[1-1][0-2]\:[0-5][0-9]\:[0-5][0-9]\s*(\AM|PM|am|pm?)\s*$/;
			time_pattern4 = /^[1-9]\:[0-5][0-9]\:[0-5][0-9]\s*(\AM|PM|am|pm?)\s*$/;	
		
			if (field.value != "") {
				if (!time_pattern.test(field.value) && !time_pattern2.test(field.value) && !time_pattern3.test(field.value) && !time_pattern4.test(field.value)) {
					error = true;
				}
			}
			break;
		
		case "email":
						var domain = args[3];
			var highlight = true;
			var default_msg = "Please enter a valid email address.";
			if (domain != "" && domain != null) {
			  email_pattern = new RegExp("^[^ ]+\@("+domain+")\.[^ ]+$");

			}
                        else {
			  email_pattern = /^[^ ]+\@[^ ]+\.[^ ]+$/;
			}
				if (!email_pattern.test(field.value)) {
					error = true;
				}
			break;
	
		case "date":
			var highlight = true;
			var default_msg = "Please enter a valid date.";
			date_pattern = /^(\d{1}|\d{2})\/(\d{1}|\d{2})\/(\d{2}|\d{4})\s*$/;
			if (field.value != "") {
				if (!date_pattern.test(field.value) || !isDateValid(field.value)) {
					error = true;
				}
			}
			break;


                case "not_equal":
			var highlight = true;
                        var value2 = args[3];
			var default_msg = "The two fields cannot be equal.";
			if (field.value == value2) {
				error = true;
			}
			break;


		case "regex":

			var highlight = true;
			var default_msg = "Please enter a valid value.";

			url_pattern = args[3];
			if (field.name != "") {
				if (!url_pattern.test(field.value)) {
					error = true;
				}
			}
			break;

  case 'negateRegex':
    var highlight = true;
    var default_msg = 'Please enter a valid value.';
    url_pattern = args[3];
    if (field.name != '') {
      if (url_pattern.test(field.value)) {
        error = true;
      }
    }
    break;

		case "notgmail":
			var highlight = false;
			var default_msg = "Please enter a non-Gmail address.";
			gmail_pattern = new RegExp("^[^ ]+\@("+"gmail"+")\.[^ ]+$");
			googlemail_pattern = new RegExp("^[^ ]+\@("+"googlemail"+")\.[^ ]+$");
			if (field.value != "") {
				if (gmail_pattern.test(field.value.toLowerCase()) 
				    || googlemail_pattern.test(field.value.toLowerCase())) {
					highlight=true;
					error = true;
				}
			}
			break;
			
		case "url":
			var highlight = true;
			var default_msg = "Please enter a valid URL.";
			url_pattern = /^(\http:|https:|mms:)\/\/.+\..+\s*$/;
			if (field.name != "") {
	 			if (!url_pattern.test(field.value)) {
					error = true;
				}
			}
			break;

                case "accountVerificationLink":
                        // http://www.google.com/accounts/VE
                        var highlight = true;
                        var default_msg = "Please enter a valid URL.";
                        url_pattern = /^(\http:\/\/www\.google\.com\/accounts\/VE)/;
			if (field.name != "") {
	 			if (!url_pattern.test(field.value)) {
					error = true;
				}
			}
                        break;

		case "bloggerurl":
			// http://YourBlogName.blogspot.com
			var highlight = true;
			var default_msg = "Please enter a valid URL.";
			
			url_pattern = /^(\http:\/\/[A-Za-z0-9_-]*\.blogspot\.com)$/;
			if (field.name != "") {
	 			if (!url_pattern.test(field.value)) {
					error = true;
				}
			}
			break;


		case "orkuturl":
			//orkut profile starts with http://www.orkut.com/Profile.aspx?uid= and has a UID of at least 8 digits
			var highlight = true;
			var default_msg = "Please enter a valid URL.";
			
			url_pattern = /^(\http:\/\/www\.orkut\.com\/Profile\.aspx\?uid=)\d{8,50}\s*$/;	//limit UID to 50 digits
			if (field.name != "") {
	 			if (!url_pattern.test(field.value)) {
					error = true;
				}
			}
			break;

                case "exactmatch":

                        var highlight = true;
                        var default_msg = "Invalid value. Please check.";
                        error = true;

                        for (i=0; i<args[3].length; i++){
                          if (args[3][i] == field.value){
                              error = false;
                              break;
                          }
                        }
                        break;

                 case "substring":
                        var highlight = true;
                        var default_msg = "Invalid value. Please check.";
                        if (args[1].value.indexOf(args[3]) == -1){
                                 error = true; 
                 
                        }
                        break;

			
		case "zipcode":
			var highlight = true;
			var default_msg = "Please enter a valid zipcode.";
			zip_pattern = /^\d{5}(\-?\d{4})?$/;
			if (field.value != "") {
				if (!zip_pattern.test(field.value)) {
					error = true;
				}
			}
			break;
			
		case "number":
			var highlight = true;
			var default_msg = "Please enter a valid number. Only 0-9 characters are allowed, no letters or symbols.";
			number_pattern = /^\d+$/;
			if (field.value != "") {
				if (!number_pattern.test(field.value)) {
					error = true;
				}
			}
                        else {
                                error = true;
                        }
			break;
		
                case "checkboxes":
                        min_checked = args[3];
                        max_checked = args[4];
                        var box = 0;
                        var count = 0;
                        var default_msg = "Please check an item from the list.";

                        var area = document.getElementById(field);
                        var inputs = area.getElementsByTagName('input');

                        for (box = 0; box < inputs.length; box++) {
                          if (inputs[box].checked) {
                            count = count + 1;
                          }
                        }

                        if (count < min_checked && count <= max_checked) {
                          error = true;
                        }

                        break;
	
		case "checkbox":
			min_checked = args[3];
			max_checked = args[4];
			var default_msg = "Please check an item from the list.";
			var count = 0;

			if (!field.length && !field.checked) {
				error = true;
			}

                        else {

			for (var i=0; i < field.length; i++) {
				if (field[i].checked) {
					count++;
				}
			}
			if (count < min_checked) {
				error = true;
			}		
			if (max_checked != "" && max_checked != null) {
				if (count > max_checked) {
					error = true;
				}
			}
                        }
			break;

		case "select":
			var highlight = true;
			var default_msg = "Please select an option from the pulldown.";
			if (field.value == "") {
				error = true;
			}
			break;
               
		case "radio":
			var default_msg = "Please select an option from the radio buttons.";
			is_checked = false;
			for (i= 0; i < field.length; i++) {
				if (field[i].checked) {
					is_checked = true;
				}
			}
			if (!is_checked) {
				error = true;
			}
			break;


		case "exactmatch_radio":
			var default_msg = "Please select an option from the radio buttons.";
                        error = true;
			for (i= 0; i < field.length; i++) {
			   if (field[i].checked) {
                             for (j=0; j<args[3].length; j++){
                               if (args[3][j] == field[i].value){
                                 error = false;
                                 break;
                               }
                             }
			  }
			}

			break;

		case "exactmatch_radio2":
			var default_msg = "Please select an option from the radio buttons.";
                        error = true;
			for (i= 0; i < field.length; i++) {
			  if (field[i].checked) {
                            if (args[3] == field[i].value){
                              error = false;
                              break;
                            }
			  }
			}

			break;

    case "file":
      valid_ext = args[3];
			var default_msg = "Please enter a valid file attachment.";
			file_pattern = new RegExp("^.+\.("+valid_ext+")$");
			if (field.value != "") {
				if (!file_pattern.test(field.value)) {
					error = true;
				}
			}
			else	{
				error=true;
			}

			break;

    case "valid_email_domain":
      var default_msg = "Please enter a valid email domain.";
      error = checkInvalidDomain(field);
      if (error) {
        highlight = true;
      }
      break;
	}

	if (alert_msg == "" || alert_msg == null) alert_msg = default_msg;
	if (error) { 
		any_error = true;
		total_msg = total_msg + alert_msg + "|";
	}
	if (error && highlight) {
		field.setAttribute("class","error");
		field.setAttribute("className","error");  	// For IE
	}
	else if (highlight && field.value != "" && field.getAttribute("className") == "error") {
		field.removeAttribute("class");
		field.removeAttribute("className");		// For IE
	}
}



function isDateValid(dateString) {
var daysInMonth = new Array(13);
daysInMonth[1] = 31;
daysInMonth[2] = 29;
daysInMonth[3] = 31;
daysInMonth[4] = 30;
daysInMonth[5] = 31;
daysInMonth[6] = 30;
daysInMonth[7] = 31;
daysInMonth[8] = 31;
daysInMonth[9] = 30;
daysInMonth[10] = 31;
daysInMonth[11] = 30;
daysInMonth[12] = 31;

var theDate = dateString.split("/");

var intYear = parseInt(theDate[2],10);
var intMonth = parseInt(theDate[0],10);
var intDay = parseInt(theDate[1],10);

if (intMonth < 1 || intMonth > 12 ) return false;
if (intDay > daysInMonth[intMonth]) return false; 
if ((intMonth == 2) && (intDay > daysInFebruary(intYear))) return false;

return true;

}

function daysInFebruary(year) {
  return (  ((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0) ) ) ? 29 : 28 );
}

function resetForms(w) {
  if (!w) {
    w = window;
  }  
  if(document.forms.length>0)  {
    for(var i=0;i<document.forms.length;i++)  {
      document.forms[i].reset();
    }
  }
  if(document.layers){
    for(var j=0;j<w.document.layers.length;j++) {
      resetForms(w.document.layers[j]); 
    }
  }
}

/**
 * Checks to see if email domain is invalid.
 * @param {Element} el Field that contains the email address.
 * @return {boolean} Whether email is invalid.
 **/
function checkInvalidDomain(el){
  var invalidDomains = [
      'general-mail.com', 'bol.com', 'bo.com.br',
      '0hotmail.com', 'hotmail.com.br', 'hotmail.br',
			'uol.com.br', 'lol.com', 'uol.com', 'mail.com',
			'gol.com', 'sol.com', '16.com', '13.com',
			'yaol.com', 'aol.com.br', 'hsn.com', 'man.com',
			'men.com', 'q.com', 'mymail.com', 'lol.com.br',
			'bo.com.br', 'boi.com.br', 'bol.cm.br', 'bol.co.br',
			'bol.com.be', 'bol.com.r', 'bol.combr', 'bola.com.br',
			'boll.com.br', 'box.com.br', 'nol.com.br', 'ol.com.br',
			'uol.com.br', 'vol.com.br', '_gmail.com', 'g-mail.com',
			'g.mail.com', 'g_mail.com', 'gamail.com', 'gamil.com',
			'gemail.com', 'ggmail.com', 'gimail.com', 'gmai.com',
			'gmail.cim', 'gmail.co', 'gmaill.com', 'gmain.com',
			'gmaio.com', 'gmal.com', 'gmali.com', 'gmeil.com',
			'gmial.com', 'gmil.com', 'gtmail.com', 'igmail.com',
			'hotmail.co.uk', 'hotmail.com.uk', '0hotmail.com',
			'8hotmail.com', '_hotmail.com', 'ahotmail.com',
			'ghotmail.com', 'gotmail.com', 'hatmail.com', 'hhotmail.com',
			'ho0tmail.com', 'hogmail.com', 'hoimail.com', 'hoitmail.com',
			'homail.com', 'homtail.com', 'hootmail.com', 'hopmail.com',
			'hoptmail.com', 'hormail.com', 'hot.mail.com', 'hot_mail.com',
			'hotail.com', 'hotamail.com', 'hotamil.com', 'hotamil.com',
			'hotimail.com', 'hotlmail.com', 'hotmaail.com', 'hotmael.com',
			'hotmai.com', 'hotmaial.com', 'hotmaiil.com', 'hotmail.acom',
			'hotmail.bom', 'hotmail.ccom', 'hotmail.cm', 'hotmail.co',
			'hotmail.coml', 'hotmail.comm', 'hotmail.con', 'hotmail.coom',
			'hotmail.copm', 'hotmail.cpm', 'hotmail.lcom', 'hotmail.ocm',
			'hotmail.om', 'hotmail.xom', 'hotmail2.com', 'hotmail_.com',
			'hotmailc.com', 'hotmaill.com', 'hotmailo.com', 'hotmaio.com',
			'hotmaiol.com', 'hotmais.com', 'hotmal.com', 'hotmall.com',
			'hotmamil.com', 'hotmaol.com', 'hotmayl.com', 'hotmeil.com',
			'hotmial.com', 'hotmil.com', 'hotmmail.com', 'hotmnail.com',
			'hotmsil.com', 'hotnail.com', 'hotomail.com', 'hottmail.com',
			'hotymail.com', 'hoymail.com', 'hptmail.com', 'htmail.com',
			'htomail.com', 'ohotmail.com', 'otmail.com', 'rotmail.com',
			'shotmail.com', 'ieg.com.br', 'ig.com.brr', 'igb.com.br',
			'igp.com.br', 'pig.com.br', 'rg.com.br', 'reaiffmail.com',
			'redffmail.com', 'redifemail.com', 'rediff.mail.com',
			'rediffemail.com', 'rediffmai.com', 'rediffmaill.com',
			'redifmail.com', 'redoffmail.com', 'yaho.co.in', 'yahoo.co.cn',
			'yahoo.co.n', 'yahoo.co.on', 'yahoo.coin', 'yahoo.com.in',
			'yahoo.cos.in', 'yahoo.oc.in', 'yaoo.co.in', 'yhoo.co.in',
			'1yahoo.com.br', '5yahoo.com.br', '_yahoo.com.br', 'ayhoo.com.br',
			'tahoo.com.br', 'uahoo.com.br', 'yagoo.com.br', 'yahho.com.br',
			'yaho.com.br', 'yahoo.cm.br', 'yahoo.co.br', 'yahoo.com.ar',
			'yahoo.com.b', 'yahoo.com.be', 'yahoo.com.ber', 'yahoo.com.bl',
			'yahoo.com.brr', 'yahoo.com.brv', 'yahoo.com.bt', 'yahoo.com.nr',
			'yahoo.coml.br', 'yahoo.con.br', 'yahoo.om.br', 'yahool.com.br',
			'yahooo.com.br', 'yahoou.com.br', 'yaoo.com.br', 'yaroo.com.br',
			'yhaoo.com.br', 'yhoo.com.br', 'yuhoo.com.br', '_yahoo.com',
			'ahoo.com', 'ayhoo.com', 'eyahoo.com', 'hahoo.com', 'sahoo.com',
			'yahho.com', 'yaho.com', 'yahol.com', 'yahoo.co', 'yahoo.con',
			'yahoo.vom', 'yahoo0.com', 'yahoo1.com', 'yahool.com',
			'yahooo.com', 'yahoou.com', 'yahoow.com', 'yahopo.com',
			'yaloo.com', 'yaoo.com', 'yaroo.com', 'yayoo.com', 'yhaoo.com',
			'yhoo.com', 'yohoo.com', 'y7mail.com'];
  var tempArr = el.value.split('@');
  el.setAttribute((document.All ? 'className' : 'class'), '');
  if (tempArr[1]) {
    var domain = tempArr[1];
    for(var i = 0; i < invalidDomains.length; i++) {
      if (domain == invalidDomains[i]) {
        return true;
      }
    }
  }
  return false;
}