function validate(form) {
  var Name = form.name.value;
  var Company = form.company.value;
  var Email = form.email.value;
  var Url = form.url.value;
  var Othertxt = form.othertxt.value;
  var Comments = form.comments.value;
  var NameRegex = /^[a-zA-Z]+(([\'\,\.\- ][a-zA-Z ])?[a-zA-Z]*)*$/;       
  var CompanyRegex = /^[a-zA-Z]+(([\'\,\.\- ][a-zA-Z ])?[a-zA-Z]*)*$/;
  var EmailRegex = /^[a-z\d]+([\.\-_][a-z\d]+)*@[a-z\d]+([\.\-_][a-z\d]+)*\.[a-z]{2,5}/i;                  
  var UrlRegex =  /((mailto\:|(news|(ht|f)tp(s?))\:\/\/){1}\S+)/;
  var OtherRegex = /^[a-zA-Z]+(([\'\,\.\- ][a-zA-Z ])?[a-zA-Z]*)*$/; 
  var CommentsRegex = /^[a-zA-Z]+(([\'\,\.\- ][a-zA-Z ])?[a-zA-Z]*)*$/; 
                  
  if(Name == "") {
    inlineMsg('name','You must enter your name.',2);
    return false;
  }
  if(!Name.match(NameRegex)) {
    inlineMsg('name','You have entered an invalid name.',2);
    return false;
  }
   if(Company == "") {
    inlineMsg('company','You must enter your company name.',2);
    return false;
  }
  if(!Company.match(CompanyRegex)) {
    inlineMsg('company','You have entered an invalid company name.',2);
    return false;
  }
  if(Email == "") {
    inlineMsg('email','You must enter your email.',2);
    return false;
  }
  if(!Email.match(EmailRegex)) {
    inlineMsg('email','You have entered an invalid email.',2);
    return false;
  }
  if(Url != "" && !Url.match(UrlRegex)) {
    inlineMsg('url','You have entered an invalid URL.',2);
    return false;
  }
  if(Othertxt != "" && !Othertxt.match(OtherRegex)) {
    inlineMsg('othertxt','You have entered an invalid format.',2);
    return false;
  }  
  if(Comments != "" && !Comments.match(CommentsRegex)) {
    inlineMsg('comments','You have entered an invalid message.',2);
    return false;
  }
  return true;
}

// START OF MESSAGE SCRIPT //

var MSGTIMER = 20;
var MSGSPEED = 5;
var MSGOFFSET = 4;
var MSGHIDE = 3;

// build out the divs, set attributes and call the fade function //
function inlineMsg(target,string,autohide) {
  var msg;
  var msgcontent;
  if(!document.getElementById('msg')) {
    msg = document.createElement('div');
    msg.id = 'msg';
    msgcontent = document.createElement('div');
    msgcontent.id = 'msgcontent';
    document.body.appendChild(msg);
    msg.appendChild(msgcontent);
    msg.style.filter = 'alpha(opacity=0)';
    msg.style.opacity = 0;
    msg.alpha = 0;
  } else {
    msg = document.getElementById('msg');
    msgcontent = document.getElementById('msgcontent');
  }
  msgcontent.innerHTML = string;
  msg.style.display = 'block';
  var msgheight = msg.offsetHeight;
  var targetdiv = document.getElementById(target);
  targetdiv.focus();
  var targetheight = targetdiv.offsetHeight;
  var targetwidth = targetdiv.offsetWidth;
  var topposition = topPosition(targetdiv) - ((msgheight - targetheight) / 2);
  var leftposition = leftPosition(targetdiv) + targetwidth + MSGOFFSET;
  msg.style.top = topposition + 'px';
  msg.style.left = leftposition + 'px';
  clearInterval(msg.timer);
  msg.timer = setInterval("fadeMsg(1)", MSGTIMER);
  if(!autohide) {
    autohide = MSGHIDE;  
  }
  window.setTimeout("hideMsg()", (autohide * 1000));
}

// hide the form alert //
function hideMsg(msg) {
  var msg = document.getElementById('msg');
  if(!msg.timer) {
    msg.timer = setInterval("fadeMsg(0)", MSGTIMER);
  }
}

// face the message box //
function fadeMsg(flag) {
  if(flag == null) {
    flag = 1;
  }
  var msg = document.getElementById('msg');
  var value;
  if(flag == 1) {
    value = msg.alpha + MSGSPEED;
  } else {
    value = msg.alpha - MSGSPEED;
  }
  msg.alpha = value;
  msg.style.opacity = (value / 100);
  msg.style.filter = 'alpha(opacity=' + value + ')';
  if(value >= 99) {
    clearInterval(msg.timer);
    msg.timer = null;
  } else if(value <= 1) {
    msg.style.display = "none";
    clearInterval(msg.timer);
  }
}

// calculate the position of the element in relation to the left of the browser //
function leftPosition(target) {
  var left = 0;
  if(target.offsetParent) {
    while(1) {
      left += target.offsetLeft;
      if(!target.offsetParent) {
        break;
      }
      target = target.offsetParent;
    }
  } else if(target.x) {
    left += target.x;
  }
  return left;
}

// calculate the position of the element in relation to the top of the browser window //
function topPosition(target) {
  var top = 0;
  if(target.offsetParent) {
    while(1) {
      top += target.offsetTop;
      if(!target.offsetParent) {
        break;
      }
      target = target.offsetParent;
    }
  } else if(target.y) {
    top += target.y;
  }
  return top;
}
// new RegExp(/<\/?\w+((\s+\w+(\s*=\s*(?:".*?"|'.*?'|[^'">\s]+))?)+\s*|\s*)\/?>/gim);