function isValidEmail(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					
	}

function IsNumeric(sText)
{
   var ValidChars = "0123456789";
   var IsNumber=true;
   var Char;
   for (i = 0; i < sText.length && IsNumber == true; i++) 
      { 
      Char = sText.charAt(i); 
      if (ValidChars.indexOf(Char) == -1) 
         {
         IsNumber = false;
         }
      }
   return IsNumber;
   
   }
function IsEmptyOption(aTextField) {
	if ( aTextField.selectedIndex == 0  )
    {
				alert('Fill all required fields.');
        return true;
    }
}

	 
function IsEmpty(aTextField) {
   if ((aTextField.value.length==0) ||  (aTextField.value==null)) {
	 alert('Fill all required fields.');
      return true;
   }
   else { return false; }
}
function thesame(aTextField, bTextField) {
   if (aTextField.value==bTextField.value) {
      return true;
   }
   else { return false; }
}
function ValidateForm(form)
{
  if(IsEmptyOption(form.group)) 
   { 
      alert('You have not choosen a group from frop down list') 
      form.group.focus(); 
      return false; 
   } 	 
   if(IsEmpty(form.fname)) 
   { 
      alert('You have not entered a first name') 
      form.fname.focus(); 
      return false; 
   } 
   if(IsEmpty(form.lname)) 
   { 
      alert('You have not entered a last name') 
      form.lname.focus(); 
      return false; 
   }   
   if(IsEmpty(form.city_new)) 
   { 
      alert('You have not entered a City') 
      form.city_new.focus(); 
      return false; 
   } 
   if(IsEmpty(form.state_new)) 
   { 
      alert('You have not entered a State') 
      form.state_new.focus(); 
      return false; 
   } 
   if(IsEmpty(form.phonenumber_new)) 
   { 
      alert('You have not entered a Phone Number') 
      form.phonenumber_new.focus(); 
      return false; 
   } 
   if(IsEmpty(form.email_new)) 
   { 
      alert('You have not entered an Email Address') 
      form.email_new.focus(); 
      return false; 
   }
    
   if(IsEmpty(form.email2_new)) 
   { 
      alert('You have not entered an Email Address') 
      form.email2_new.focus(); 
      return false; 
   } 
   if(!isValidEmail(form.email_new.value)) 
   { 
      alert('You have not entered valid email') 
      form.email_new.focus(); 
      return false; 
   }
   if(!thesame(form.email_new, form.email2_new))
   {
	alert('Please make sure both email addresses are the same')
        return false; 
   } 
   if (!IsNumeric(form.phonenumber_new.value)) 
   { 
      alert('Please enter only numbers in the Primary phone number field') 
      form.phonenumber_new.focus(); 
      return false; 
      } 

return true;  
}