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					
}
function doValidatehotel(){
	if(document.hotelbooking.txt_name1.value==""){
		alert("Please type your FULL NAME.");
		document.hotelbooking.txt_name1.focus();
		return false;
	}
	if(document.hotelbooking.txt_email1.value==""){
		alert("Please type your EMAIL.");
		document.hotelbooking.txt_email1.focus();
		return false;
	}
	var emailID=document.hotelbooking.txt_email1
	
	if ((emailID.value==null)||(emailID.value=="")){
		alert("Please type your valid Email Address.")
		emailID.focus()
		return false
	}
	if (echeck(emailID.value)==false){
		emailID.value=""
		emailID.focus()
		return false
	}
	if(document.hotelbooking.message1.value==""){
		alert("Please type your Comments.");
		document.hotelbooking.message1.focus();
		return false;
	}

	return true;
}