function chkForm(){   



    var name = document.getElementById('name');

    var address = document.getElementById('address');

    var email = document.getElementById('email');

	var tel = document.getElementById('tel');

    var typeroom = document.getElementById('typeroom');

    var addDate = document.getElementById('addDate');

    var night = document.getElementById('night');

    

        

	  if(name.value == "") {

            alert( "Please enter your Name." );

            name.focus();

            return false ;    

            }  

      if(address.value == "") {

            alert( "Please enter your Address." );

            address.focus();

            return false ;    

            }   

      if (email.value == "") {

                alert( "Please enter your email address." );

                email.focus();

                return false ;        

            }

            else if(echeck(email.value)==false){

                email.value="";

                email.focus();

                return false

            }                

          

      if (typeroom.value == "0"){

            alert( "Select Room Type." );

            typeroom.focus();

            return false ;        

            }
      if (numroom.value == "0"){

            alert( "Select No. of Room(s)" );

            numroom.focus();

            return false ;        

            }
            

      if (addDate.value == "Please Select Date Checkin"){

            alert( "Please Select Date Checkin." );

            addDate.focus();

            return false ;        

            }           

            

      if(night.value == 0){

            alert( "Please enter No. of Night(s)." );

            night.focus();

            return false;

            }      



}

function checkIt(evt) {

            evt = (evt) ? evt : window.event

            var charCode = (evt.which) ? evt.which : evt.keyCode

            if (charCode > 31 && (charCode < 48 || charCode > 57)) {

                alert("This field accepts numbers only.");

                return false

            }

            status = ""

            return true

        }

     function echeck(str) {



                var at="@"

                var dot="."

                var lat=str.indexOf(at)

                var lstr=str.length

                var ldot=str.indexOf(dot)

                if (str.indexOf(at)==-1){

                   alert("Invalid E-mail ID")

                   return false

                }



                if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){

                   alert("Invalid E-mail ID")

                   return false

                }



                if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){

                    alert("Invalid E-mail ID")

                    return false

                }



                 if (str.indexOf(at,(lat+1))!=-1){

                    alert("Invalid E-mail ID")

                    return false

                 }



                 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){

                    alert("Invalid E-mail ID")

                    return false

                 }



                 if (str.indexOf(dot,(lat+2))==-1){

                    alert("Invalid E-mail ID")

                    return false

                 }

                

                 if (str.indexOf(" ")!=-1){

                    alert("Invalid E-mail ID")

                    return false

                 }



                 return true                    

        }