function contactval(){
if (trimBlank(document.contactus.customer_fname.value) ==""){
alert ("Please enter your First name!")
return false;
}else if (trimBlank(document.contactus.customer_lname.value) ==""){
alert ("Please enter your Last name");
  return false; 
}else if (trimBlank(document.contactus.customer_email.value) ==""){
alert ("Please enter a valid email Address");
  return false; 
}else if  (!isEmailAddr(document.contactus.customer_email.value)){
   alert("Please enter a correct email address: name@yourdomain.com");
   document.contactus.customer_email.focus();
  return false; 
}else if (trimBlank(document.contactus.customer_enquiry.value) ==""){
alert ("Please enter your Enquiry");
  return false; 
  } else{
return true;
	}
}

function trimBlank(checkString){
   var newString = "";
   if (checkString.length > 0){
      for (i=0; i<checkString.length; i++)  {
         if (checkString.charAt(i) != " ") newString += checkString.charAt(i)
      }
   }
return newString
}