function isEmailAddr(email){
  var result = false
  var theStr = new String(email)
  var index = theStr.indexOf("@");
  if (index > 0) {
    var pindex = theStr.indexOf(".",index);
    if ((pindex > index+1) && (theStr.length > pindex+1))
	result = true;
  }
  return result;
}

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
}

function  contact (){
	if (trimBlank(document.contactfrm.contact_name.value) ==""){
alert ("Please enter your  Name");
 return false; 
} else if (trimBlank(document.contactfrm.contact_email.value) ==""){
alert ("Please enter your Email Address")
 document.contactfrm.contact_email.focus();
return false;
}else if  (!isEmailAddr(document.contactfrm.contact_email.value)){
   alert("Please enter a correct email address: name@yourdomain.com");
   document.contactfrm.contact_email.focus();
  return false; 
}else if (trimBlank(document.contactfrm.contact_company.value) ==""){
alert ("Please enter your Company Name")
 document.contactfrm.contact_company.focus();
return false;
}else if (trimBlank(document.contactfrm.contact_tel.value) ==""){
alert ("Please enter your Telephone Number")
 document.contactfrm.contact_tel.focus();
return false;
}else if (trimBlank(document.contactfrm.contact_enq.value) ==""){
alert ("Please enter your Enquiry")
 document.contactfrm.contact_enq.focus();
return false;
}else {

return true;

	}
}