function checkEmail(emailStr){
  filter=/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i
  if (filter.test(emailStr)) {
    return true
  } else {
    return false
  }
}

// Author: Matt Kruse <matt@mattkruse.com>
// WWW: http://www.mattkruse.com/

var MONTH_NAMES=new Array('January','February','March','April','May','June','July','August','September','October','November','December','Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec');
var DAY_NAMES=new Array('Sunday','Monday','Tuesday','Wednesday','Thursday','Friday','Saturday','Sun','Mon','Tue','Wed','Thu','Fri','Sat');
function LZ(x) {return(x<0||x>9?"":"0")+x}

function isDate(val,format) {
		 var date=getDateFromFormat(val,format);
		 if (date==0) { return false; }
		 return true;
		 }

function compareDates(date1,dateformat1,date2,dateformat2) {
		 var d1=getDateFromFormat(date1,dateformat1);
		 var d2=getDateFromFormat(date2,dateformat2);
		 if (d1==0 || d2==0) {
		 		 return -1;
		 		 }
		 else if (d1 > d2) {
		 		 return 1;
		 		 }
		 return 0;
		 }

function formatDate(date,format) {
		 format=format+"";
		 var result="";
		 var i_format=0;
		 var c="";
		 var token="";
		 var y=date.getYear()+"";
		 var M=date.getMonth()+1;
		 var d=date.getDate();
		 var E=date.getDay();
		 var H=date.getHours();
		 var m=date.getMinutes();
		 var s=date.getSeconds();
		 var yyyy,yy,MMM,MM,dd,hh,h,mm,ss,ampm,HH,H,KK,K,kk,k;
		 // Convert real date parts into formatted versions
		 var value=new Object();
		 if (y.length < 4) {y=""+(y-0+1900);}
		 value["y"]=""+y;
		 value["yyyy"]=y;
		 value["yy"]=y.substring(2,4);
		 value["M"]=M;
		 value["MM"]=LZ(M);
		 value["MMM"]=MONTH_NAMES[M-1];
		 value["NNN"]=MONTH_NAMES[M+11];
		 value["d"]=d;
		 value["dd"]=LZ(d);
		 value["E"]=DAY_NAMES[E+7];
		 value["EE"]=DAY_NAMES[E];
		 value["H"]=H;
		 value["HH"]=LZ(H);
		 if (H==0){value["h"]=12;}
		 else if (H>12){value["h"]=H-12;}
		 else {value["h"]=H;}
		 value["hh"]=LZ(value["h"]);
		 if (H>11){value["K"]=H-12;} else {value["K"]=H;}
		 value["k"]=H+1;
		 value["KK"]=LZ(value["K"]);
		 value["kk"]=LZ(value["k"]);
		 if (H > 11) { value["a"]="PM"; }
		 else { value["a"]="AM"; }
		 value["m"]=m;
		 value["mm"]=LZ(m);
		 value["s"]=s;
		 value["ss"]=LZ(s);
		 while (i_format < format.length) {
		 		 c=format.charAt(i_format);
		 		 token="";
		 		 while ((format.charAt(i_format)==c) && (i_format < format.length)) {
		 		 		 token += format.charAt(i_format++);
		 		 		 }
		 		 if (value[token] != null) { result=result + value[token]; }
		 		 else { result=result + token; }
		 		 }
		 return result;
		 }
		 
function _isInteger(val) {
		 var digits="1234567890";
		 for (var i=0; i < val.length; i++) {
		 		 if (digits.indexOf(val.charAt(i))==-1) { return false; }
		 		 }
		 return true;
		 }
function _getInt(str,i,minlength,maxlength) {
		 for (var x=maxlength; x>=minlength; x--) {
		 		 var token=str.substring(i,i+x);
		 		 if (token.length < minlength) { return null; }
		 		 if (_isInteger(token)) { return token; }
		 		 }
		 return null;
		 }
		 
function getDateFromFormat(val,format) {
		 val=val+"";
		 format=format+"";
		 var i_val=0;
		 var i_format=0;
		 var c="";
		 var token="";
		 var token2="";
		 var x,y;
		 var now=new Date();
		 var year=now.getYear();
		 var yearTmp=now.getYear() + "";
		var yearNow=yearTmp.substring(2,4)*1;
		 var month=now.getMonth()+1;
		 var date=1;
		 var hh=now.getHours();
		 var mm=now.getMinutes();
		 var ss=now.getSeconds();
		 var ampm="";
		 
		 while (i_format < format.length) {
		 		 // Get next token from format string
		 		 c=format.charAt(i_format);
		 		 token="";
		 		 while ((format.charAt(i_format)==c) && (i_format < format.length)) {
		 		 		 token += format.charAt(i_format++);
		 		 		 }
		 		 // Extract contents of value based on format token
		 		 if (token=="yyyy" || token=="yy" || token=="y") {
		 		 		 if (token=="yyyy") { x=4;y=4; }
		 		 		 if (token=="yy")   { x=2;y=2; }
		 		 		 if (token=="y")    { x=2;y=4; }
		 		 		 year=_getInt(val,i_val,x,y);
		 		 		 if (year==null) { return 0; }
		 		 		 i_val += year.length;
		 		 		 if (year.length==2) {
		 		 		 		 if (year > yearNow) { year=1900+(year-0); }
		 		 		 		 else { year=2000+(year-0); }
		 		 		 		 }
		 		 		 }
		 		 else if (token=="MMM"||token=="NNN"){
		 		 		 month=0;
		 		 		 for (var i=0; i<MONTH_NAMES.length; i++) {
		 		 		 		 var month_name=MONTH_NAMES[i];
		 		 		 		 if (val.substring(i_val,i_val+month_name.length).toLowerCase()==month_name.toLowerCase()) {
		 		 		 		 		 if (token=="MMM"||(token=="NNN"&&i>11)) {
		 		 		 		 		 		 month=i+1;
		 		 		 		 		 		 if (month>12) { month -= 12; }
		 		 		 		 		 		 i_val += month_name.length;
		 		 		 		 		 		 break;
		 		 		 		 		 		 }
		 		 		 		 		 }
		 		 		 		 }
		 		 		 if ((month < 1)||(month>12)){return 0;}
		 		 		 }
		 		 else if (token=="EE"||token=="E"){
		 		 		 for (var i=0; i<DAY_NAMES.length; i++) {
		 		 		 		 var day_name=DAY_NAMES[i];
		 		 		 		 if (val.substring(i_val,i_val+day_name.length).toLowerCase()==day_name.toLowerCase()) {
		 		 		 		 		 i_val += day_name.length;
		 		 		 		 		 break;
		 		 		 		 		 }
		 		 		 		 }
		 		 		 }
		 		 else if (token=="MM"||token=="M") {
		 		 		 month=_getInt(val,i_val,token.length,2);
		 		 		 if(month==null||(month<1)||(month>12)){return 0;}
		 		 		 i_val+=month.length;}
		 		 else if (token=="dd"||token=="d") {
		 		 		 date=_getInt(val,i_val,token.length,2);
		 		 		 if(date==null||(date<1)||(date>31)){return 0;}
		 		 		 i_val+=date.length;}
		 		 else if (token=="hh"||token=="h") {
		 		 		 hh=_getInt(val,i_val,token.length,2);
		 		 		 if(hh==null||(hh<1)||(hh>12)){return 0;}
		 		 		 i_val+=hh.length;}
		 		 else if (token=="HH"||token=="H") {
		 		 		 hh=_getInt(val,i_val,token.length,2);
		 		 		 if(hh==null||(hh<0)||(hh>23)){return 0;}
		 		 		 i_val+=hh.length;}
		 		 else if (token=="KK"||token=="K") {
		 		 		 hh=_getInt(val,i_val,token.length,2);
		 		 		 if(hh==null||(hh<0)||(hh>11)){return 0;}
		 		 		 i_val+=hh.length;}
		 		 else if (token=="kk"||token=="k") {
		 		 		 hh=_getInt(val,i_val,token.length,2);
		 		 		 if(hh==null||(hh<1)||(hh>24)){return 0;}
		 		 		 i_val+=hh.length;hh--;}
		 		 else if (token=="mm"||token=="m") {
		 		 		 mm=_getInt(val,i_val,token.length,2);
		 		 		 if(mm==null||(mm<0)||(mm>59)){return 0;}
		 		 		 i_val+=mm.length;}
		 		 else if (token=="ss"||token=="s") {
		 		 		 ss=_getInt(val,i_val,token.length,2);
		 		 		 if(ss==null||(ss<0)||(ss>59)){return 0;}
		 		 		 i_val+=ss.length;}
		 		 else if (token=="a") {
		 		 		 if (val.substring(i_val,i_val+2).toLowerCase()=="am") {ampm="AM";}
		 		 		 else if (val.substring(i_val,i_val+2).toLowerCase()=="pm") {ampm="PM";}
		 		 		 else {return 0;}
		 		 		 i_val+=2;}
		 		 else {
		 		 		 if (val.substring(i_val,i_val+token.length)!=token) {return 0;}
		 		 		 else {i_val+=token.length;}
		 		 		 }
		 		 }
		 // If there are any trailing characters left in the value, it doesn't match
		 if (i_val != val.length) { return 0; }
		 // Is date valid for month?
		 if (month==2) {
		 		 // Check for leap year
		 		 if ( ( (year%4==0)&&(year%100 != 0) ) || (year%400==0) ) { // leap year
		 		 		 if (date > 29){ return 0; }
		 		 		 }
		 		 else { if (date > 28) { return 0; } }
		 		 }
		 if ((month==4)||(month==6)||(month==9)||(month==11)) {
		 		 if (date > 30) { return 0; }
		 		 }
		 // Correct hours value
		 if (hh<12 && ampm=="PM") { hh=hh-0+12; }
		 else if (hh>11 && ampm=="AM") { hh-=12; }
		 var newdate=new Date(year,month-1,date,hh,mm,ss);
		 return newdate.getTime();
		 }

function parseDate(val) {
		 var preferEuro=(arguments.length==2)?arguments[1]:false;
		 generalFormats=new Array('y-M-d','MMM d, y','MMM d,y','y-MMM-d','d-MMM-y','MMM d');
		 monthFirst=new Array('M/d/y','M-d-y','M.d.y','MMM-d','M/d','M-d');
		 dateFirst =new Array('d/M/y','d-M-y','d.M.y','d-MMM','d/M','d-M');
		 var checkList=new Array('generalFormats',preferEuro?'dateFirst':'monthFirst',preferEuro?'monthFirst':'dateFirst');
		 var d=null;
		 for (var i=0; i<checkList.length; i++) {
		 		 var l=window[checkList[i]];
		 		 for (var j=0; j<l.length; j++) {
		 		 		 d=getDateFromFormat(val,l[j]);
		 		 		 if (d!=0) { return new Date(d); }
		 		 		 }
		 		 }
		 return null;
		 }