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){
		   return false
		}

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

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

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

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

		 if (str.indexOf(dot,(lat+2))==-1){
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    return false
		 }

 		 return true					
	}

function checkForm() {
name = document.getElementById("name").value;
email = document.getElementById("email").value;
if (name == "name (required)") { document.getElementById("nameError").style.display = "inline";
document.getElementById("name").select();
document.getElementById("name").focus();
  return false;
  } else if (email == "email (required)") {
hideAllErrors();
document.getElementById("emailError").style.display = "inline";
document.getElementById("email").select();
document.getElementById("email").focus();
  return false;
  } else if (echeck(email) == false) {
hideAllErrors();
document.getElementById("emailError").style.display = "inline";
document.getElementById("email").select();
document.getElementById("email").focus();
  return false;
  }
  return true;
  }
  
function checkForm_side() {
name = document.getElementById("name_side").value;
email = document.getElementById("email_side").value;
if (name == "name (required)") { document.getElementById("nameError_side").style.display = "inline";
document.getElementById("name_side").select();
document.getElementById("name_side").focus();
  return false;
  } else if (email == "email (required)") {
hideAllErrors_side();
document.getElementById("emailError_side").style.display = "inline";
document.getElementById("email_side").select();
document.getElementById("email_side").focus();
  return false;
  } else if (echeck(email) == false) {
hideAllErrors_side();
document.getElementById("emailError_side").style.display = "inline";
document.getElementById("email_side").select();
document.getElementById("email_side").focus();
  return false;
  }
  return true;
  }
 
	
function hideAllErrors() {
document.getElementById("nameError").style.display = "none";
document.getElementById("emailError").style.display = "none";
  }
  
 function hideAllErrors_side() {
document.getElementById("nameError_side").style.display = "none";
document.getElementById("emailError_side").style.display = "none";
  }