function validation_of_site_search_form(form)
{
  if ((form.query.value == null)  ||
      (form.query.value == "Search") ||
      (form.query.value == "")    || 
       isBlank(form.query.value))  {
     alert("Please enter keyword(s) to Search");
     form.query.focus();
     return false;
  }
  else
  { 
     return true;
  }
}	  

function validation_of_signup(form)
{
  if ((form.login_email.value == null)  ||
      (form.login_email.value == "Enter e-mail") ||
      (form.login_email.value == "")    || 
       isBlank(form.login_email.value))  {
     alert("Please enter your e-mail");
     form.login_email.focus();
     return false;
  }
  else
  { 
     return true;
  }
}	

function isBlank(str)
{
   for(var i = 0; i < str.length; i++)
   {
      var chr = str.charAt(i);
      if ((chr != ' ') && (chr != '\n') && (chr != '\t')) return false;
   }
   return true;
}		

function validation_of_plan_finder_form(form)
{
  if ((form.zipcode.value == null)  ||
      (form.zipcode.value == "Enter zip code") || 
      (form.zipcode.value == "")    || 
       isBlank(form.zipcode.value))  {
     alert("Please enter a zipcode");
     form.zipcode.focus();
     return false;
  }
  else
  { 
     return true;
  }
}
	 

function validation_of_agency_finder_form(form)
{
  if ((form.agency_zip.value == null)  ||
      (form.agency_zip.value == "Enter zip code") ||
	  (form.agency_zip.value == "Zip Code") ||
      (form.agency_zip.value == "")    || 
       isBlank(form.agency_zip.value))  {
     alert("Please enter a zipcode");
     form.agency_zip.focus();
     return false;
  }
  else
  { 
     return true;
  }
}


function validation_of_pedometer_finder_form(form)
{
  if ((form.zipcode.value == null)  ||
      (form.zipcode.value == "")    || 
       isBlank(form.zipcode.value))  {
     alert("Please enter a zipcode");
     form.zipcode.focus();
     return false;
  }
  else
  {      
     window.open("http://apps.bcbs.com/cgi-bin/pedometer_finder.cgi?zipcode=" + document.pedometer.zipcode.value);      
     
     //******
     //document.zipcode.action="http://apps.bcbs.com/cgi-bin/pedometer_finder.cgi";     
     //document.zipcode.method="post";
     //document.zipcode.submit();
     return true;
     //******
  }
}



function validate_news_signup(form) { 
var news_email= form.email.value;

  if ((news_email == null)  ||
      (news_email == "Enter e-mail") ||
      (news_email == "")    || 
       isBlank(news_email))  {
     alert("Please enter an email");
     form.email.focus();
     return false;
  }	
  
  // Assemble the TLD array. Warn on invalid email TLD.
  var tlds = ['AC','AD','AE','AERO','AF','AG','AI','AL','AM','AN','AO','AQ','AR','ARPA','AS','AT','AU','AW','AZ','BA','BB','BD','BE','BF','BG','BH','BI','BIZ','BJ','BM','BN','BO','BR','BS','BT','BV','BW','BY','BZ','CA','CC','CD','CF','CG','CH','CI','CK','CL','CM','CN','CO','COM','COOP','CR','CU','CV','CX','CY','CZ','DE','DJ','DK','DM','DO','DZ','EC','EDU','EE','EG','ER','ES','ET','EU','FI','FJ','FK','FM','FO','FR','GA','GB','GD','GE','GF','GG','GH','GI','GL','GM','GN','GOV','GP','GQ','GR','GS','GT','GU','GW','GY','HK','HM','HN','HR','HT','HU','ID','IE','IL','IM','IN','INFO','INT','IO','IQ','IR','IS','IT','JE','JM','JO','JP','KE','KG','KH','KI','KM','KN','KR','KW','KY','KZ','LA','LB','LC','LI','LK','LR','LS','LT','LU','LV','LY','MA','MC','MD','MG','MH','MIL','MK','ML','MM','MN','MO','MP','MQ','MR','MS','MT','MU','MUSEUM','MV','MW','MX','MY','MZ','NA','NAME','NC','NE','NET','NF','NG','NI','NL','NO','NP','NR','NU','NZ','OM','ORG','PA','PE','PF','PG','PH','PK','PL','PM','PN','PR','PRO','PS','PT','PW','PY','QA','RE','RO','RU','RW','SA','SB','SC','SD','SE','SG','SH','SI','SJ','SK','SL','SM','SN','SO','SR','ST','SU','SV','SY','SZ','TC','TD','TF','TG','TH','TJ','TK','TL','TM','TN','TO','TP','TR','TT','TV','TW','TZ','UA','UG','UK','UM','US','UY','UZ','VA','VC','VE','VG','VI','VN','VU','WF','WS','YE','YT','YU','ZA','ZM','ZW'];

  
	if ( news_email != null && news_email != "" ) {
		var emailPattern = /^\w.*@\w.+\.[a-z]+$/i;
		if ( ! emailPattern.test(news_email) ) {
		alert("The email address supplied is not valid. Please check that the email address matches the format user@example.com.");
		return false;
		}
		var examplePattern = /[.@]example\.[^.]+$/i;
		if ( examplePattern.test(news_email) ) {
		alert("The email address supplied is not valid. Please check that the email address matches the format user@example.com.");
		return false;
		}
	}  
	
	var isValidTLD = false;
    var tldIndex = news_email.lastIndexOf(".")+1;
  	if ( 0 < tldIndex && tldIndex < news_email.length ) {
      var tld = news_email.substr(tldIndex).toUpperCase();
      for (i=0; i<tlds.length; i++) {
        if ( tld == tlds[i] ) {
          isValidTLD = true;
          break;
        }
      }      
    }
  
  	if ( !isValidTLD ) {
      alert("WARNING: The email address supplied does not contain a valid top level domain such as .com or .org.")
        return false;
    }	
	
	
	  else{
	  	return true;
	  }
	

}