function readcookie() {
    document.contact_us.realname.focus();
    if (document.cookie.length>0) {
       var mcookie=document.cookie.split("=");
       mvalue=mcookie[1].split("/");
       mname=unescape(mvalue[0]);
       mmail=unescape(mvalue[1]);
       document.contact_us.realname.value=mname;
       document.contact_us.email.value=mmail;
       document.contact_us.feedback_txt.focus()
       email_change()
    }
 }

 function clearFeedback() {
    document.contact_us.feedback_txt.value=""
 }


 function checkRequired() {
    var problem="no"
    var mnofeedback=document.getElementById("nofeedback");
    var mnorealname=document.getElementById("norealname");
    var mnoemail=document.getElementById("noemail");
    var minvalidemail=document.getElementById("invalidemail");
    var myesfeedback=document.getElementById("yesfeedback");

    if (document.contact_us.feedback_txt.value=="") {
       if (myesfeedback.style.display=='none') {
          mnofeedback.style.display='inline';
       }
       problem="yes";
      }
    else {
       mnofeedback.style.display='none';
      }

    if (document.contact_us.realname.value=="") {
       mnorealname.style.display='inline';
       problem="yes";
      }
    else {
       mnorealname.style.display='none';
      }

    if (document.contact_us.email.value=="") {
       mnoemail.style.display='inline';
       minvalidemail.style.display='none';
       problem="yes";
      }
    else {
       var mnoemail=document.getElementById("noemail");
       var minvalidemail=document.getElementById("invalidemail");

       var form = document.contact_us;
 
      var the_at = form.email.value.indexOf("@");
  
     var the_dot = form.email.value.lastIndexOf(".");
 
      var a_space = form.email.value.indexOf(" ");
  
     var a_comma = form.email.value.indexOf(",");
 
      if  ((the_at == -1) ||  // if there's no '@'
   
        (the_at == 0) ||  // or it's at position 0
   
        (the_dot == -1) || // or there's no '.'
      
     (the_dot <= the_at + 1) ||  // or the '@' is after '.'
      
     (the_dot > form.email.value.length - 3) || // there is less than 2 char after the '.'
     
      (a_space  !== -1) || // or there's a space
     
      (a_comma  !== -1))  // or there's a comma
  
     {   

   
      mnoemail.style.display='none';
  
       minvalidemail.style.display='inline';
         problem="yes";
   
    }
    }



    if (problem=="yes") {
       return false;
      }

    else {
       mnofeedback.style.display='none';
       myesfeedback.style.display='inline';
       document.contact_us.feedback.value=document.contact_us.feedback_txt.value;
       var mdate=new Date("December 31, 2015");
       var expiredate=mdate.toGMTString();
       var mcookie="name="+escape(document.contact_us.realname.value)+"/"+escape(document.contact_us.email.value)+";expires="+expiredate;
       document.cookie=mcookie;
       document.contact_us.feedback_txt.value="";
       document.contact_us.spamfltr.value="";
       if (document.contact_us.recipient.value=="webmaster") {
          document.contact_us.user_agent.value=navigator.userAgent;
       }
       return true;
    }
 }

 function txtarea_focus() {
    var mnofeedback=document.getElementById("nofeedback");
    var myesfeedback=document.getElementById("yesfeedback");
    mnofeedback.style.display='none';
    myesfeedback.style.display='none';
    document.contact_us.spamfltr.value="";
document.contact_us.button.disabled=false

 }

 function realname_focus() {
    var mnorealname=document.getElementById("norealname");
    mnorealname.style.display='none';
 }

 function email_focus() {
    var mnoemail=document.getElementById("noemail");
    var minvalidemail=document.getElementById("invalidemail");
    mnoemail.style.display='none';
    minvalidemail.style.display='none';

 }

 function email_change() {
// check that Email address is in proper format
    var mnoemail=document.getElementById("noemail");
    var minvalidemail=document.getElementById("invalidemail");
    var form = document.contact_us;
    var the_at = form.email.value.indexOf("@");
    var the_dot = form.email.value.lastIndexOf(".");
    var a_space = form.email.value.indexOf(" ");
    var a_comma = form.email.value.indexOf(",");
    if  ((the_at == -1) ||  // if there's no '@'
        (the_at == 0) ||  // or it's at position 0
        (the_dot == -1) || // or there's no '.'
        (the_dot <= the_at + 1) ||  // or the '@' is after '.'
        (the_dot > form.email.value.length - 3) || // there is less than 2 char after the '.'
        (a_space  !== -1) || // or there's a space
        (a_comma  !== -1))  // or there's a comma
    {   

    mnoemail.style.display='none';
    minvalidemail.style.display='inline';
    }
 }