// JavaScript Document

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){
		   document.getElementById('email_alert').innerHTML = '*Invalid E-mail ID';
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   document.getElementById('email_alert').innerHTML = '*Invalid E-mail ID';
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    document.getElementById('email_alert').innerHTML = '*Invalid E-mail ID';
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    document.getElementById('email_alert').innerHTML = '*Invalid E-mail ID';
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    document.getElementById('email_alert').innerHTML = '*Invalid E-mail ID';
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    document.getElementById('email_alert').innerHTML = '*Invalid E-mail ID';
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
			document.getElementById('email_alert').innerHTML = '*Invalid E-mail ID';
		    return false
		 }

 		 return true					
	}

function ValidateForm(){
	var emailID=document.reservation_form.Email_Address;
	
	if ((emailID.value==null)||(emailID.value=="")){
		document.getElementById('email_alert').innerHTML = '*Please enter email address';
		emailID.focus()
		return false
	}
	if (echeck(emailID.value)==false){
		emailID.value=""
		emailID.focus()
		return false
	}
	return true
 }



		function addOption(selectbox,text,value )
		{
			var optn = document.createElement("OPTION");
			optn.text = text;
			optn.value = value;
			selectbox.options.add(optn);
		}