function trim(s) {

    if((s==null)||(typeof(s)!='string')||!s.length) {
        return '';
    }
    return s.replace(/^\s+/,'').replace(/\s+$/,'');

}

function check_blank(field) {

    if (field == '') {
        return false;
    }
    if (trim(field) == '') {
        return false;
    }
    return true;
}

function check_blank_CMS(field) {
    
    var stripped = trim(field.replace(/(<([^>]+)>)/ig,""));
    stripped = stripped.replace(/&nbsp;/ig,"");

    if (field == '') {
        return false;
    }
    if (trim(field) == '') {
        return false;
    }
    if (stripped == '') {
        return false;
    }
    return true;
}

function echeck(str) {

      var at="@";
      var dot=".";
      var lat=str.indexOf(at);
      var lstr=str.length;
      var ldot=str.indexOf(dot);

      if (str.indexOf(at)==-1){
	   return false;
      }

      if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
          return false;
      }

      if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
 	  return false;
      }

      if (str.indexOf(at,(lat+1))!=-1){
	  return false;
      }

      if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
	  return false;
      }

      if (str.indexOf(dot,(lat+2))==-1){
          return false;
      }
		
      if (str.indexOf(" ")!=-1){
	  return false;
      }

      return true;					
}

function validate_question() {
    
    var comments = document.form1.comments.value;
    var name = document.form1.name.value;
    var email = document.form1.email.value;
    var captcha = document.form1.captcha.value;

    if (!check_blank(comments)) {
	alert('Comments cannot be blank.');
	return false;
    }

    if (!check_blank(name)) {
	alert('Name cannot be blank.');
	return false;
    }

    if (!check_blank(email)) {
	alert('Email cannot be blank.');
	return false;
    }

    if (!echeck(email)) {
	alert('Your email address is invalid.');
	return false;
    }

    if (!check_blank(captcha)) {
	alert('You must input what you see in the image.');
	return false;
    }

    return true;
}

function validate_login() {
    
    var username = document.form1.username.value;
    var password = document.form1.password.value;

    if (!check_blank(username)) {
	alert('User name cannot be blank.');
	return false;
    }
    
    else if (!check_blank(password)) {
	alert('Password cannot be blank.');
	return false;
    }

    return true;
}

function validate_user() {
    
    var username = document.form1.username.value;
    var password = document.form1.password.value;

    if (!check_blank(username)) {
	alert('User name cannot be blank.');
	return false;
    }
    
    else if (!check_blank(password)) {
	alert('Password cannot be blank.');
	return false;
    }

    return true;
}

function validate_company() {
    
    var oEditor = FCKeditorAPI.GetInstance('company');
    var oDOM = oEditor.EditorDocument;
    var content = '';
    if (document.all) {
        content = oDOM.body.innerText;
    }
    else {
        var r = oDOM.createRange();
        r.selectNodeContents(oDOM.body);
        content = r.toString();
    }
    
    if (!check_blank_CMS(content)) {
	alert('Company description cannot be blank.');
	return false;
    }

    return true;
}

function validate_profile() {
    
    var oEditor = FCKeditorAPI.GetInstance('profile');
    var oDOM = oEditor.EditorDocument;
    var content = '';
    if (document.all) {
        content = oDOM.body.innerText;
    }
    else {
        var r = oDOM.createRange();
        r.selectNodeContents(oDOM.body);
        content = r.toString();
    }
    
    if (!check_blank_CMS(content)) {
	alert('Profile description cannot be blank.');
	return false;
    }

    return true;
}

function validate_profile() {
    
    var oEditor = FCKeditorAPI.GetInstance('contact');
    var oDOM = oEditor.EditorDocument;
    var content = '';
    if (document.all) {
        content = oDOM.body.innerText;
    }
    else {
        var r = oDOM.createRange();
        r.selectNodeContents(oDOM.body);
        content = r.toString();
    }
    
    if (!check_blank_CMS(content)) {
	alert('Contact description cannot be blank.');
	return false;
    }

    return true;
}

function validate_property() {
   
    var address = document.form1.address.value;
    var leaseStatus = document.form1.leaseStatus.value;

    if (!check_blank(address)) {
	alert('Address cannot be blank.');
	return false;
    }

    else if (!check_blank(leaseStatus)) {
	alert('Lease Status cannot be blank.');
	return false;
    }

    return true;
}

function validate_image(id) {
    
    var image = document.getElementById(id).value;

    if (!check_blank(image)) {
	alert('You must browse for an image to upload.');
	return false;
    }

    return true;
}

function validate_add_image() {
    
    var image = document.addImage.image.value;

    if (!check_blank(image)) {
	alert('You must browse for an image to upload.');
	return false;
    }

    return true;
}