function LTrim( value ) {
	var re = /\s*((\S+\s*)*)/;
	return value.replace(re, "$1");
}
function RTrim( value ) {
	var re = /((\s*\S+)*)\s*/;
	return value.replace(re, "$1");
}
function trim( value ) {
	return LTrim(RTrim(value));
}
function field_empty(field){
var a=trim(field.toString());
if (a.length==0){
return true;
} else {
return false;
}
}

function remove_space(str){
var newstr=str.replace(' ','');
return newstr.toLowerCase();
}

function validate_reservation() 
{
var string="";
var ok=true;
first_name = document.form_reservation.first_name.value;
last_name = document.form_reservation.last_name.value;
email = document.form_reservation.email.value;
phone = document.form_reservation.phone.value;
country = document.form_reservation.country.value;


if (field_empty(first_name))  {
        string=string+"Please insert first name";
        ok=false;
			     }
if (field_empty(last_name))   {
        string =string+"\nPlease insert last name";
        ok=false;
			    }
    
if(field_empty(email))
     {
         string =string+"\nPlease insert email";
         ok=false;
         }
         
   if(field_empty(phone))
     {
         string =string+"\nPlease insert phone";
         ok=false;
         }
         
    if(field_empty(country))
     {
         string =string+"\nPlease select country";
         ok=false;
         }
         
         
if (!ok) {
	alert(string);
	return false;
 } else {
	return true;
 }
}