function insertComment(){
    xmlHttp=ajaxFunction();
    mail=document.getElementById("txtMail").value;
    mail=escape(mail.toLowerCase()); 
    name=escape(document.getElementById("txtName").value);
    organization=escape(document.getElementById("txtOrganization").value);
    comment=escape(document.getElementById("txtComment").value);
    captcha=document.getElementById("txtValid").value;
    xmlHttp.open("POST","comments.php?",true);
    xmlHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
    xmlHttp.send("operation=3&email="+mail+"&name="+name+"&organization="+organization+"&comment="+comment+"&captcha="+captcha);          
    xmlHttp.onreadystatechange=function(){
    if(xmlHttp.readyState==4){
        if(xmlHttp.responseText){
            if(xmlHttp.responseText.substring(0,1)=='1'){
                document.getElementById("nameError").innerHTML='<img class="message" src="images/cancel.jpg" />';
                document.getElementById("nameError").style.display='inline';
                document.getElementById("txtName").focus();    
            }
            else{
                document.getElementById("nameError").innerHTML='<img class="message" src="images/accepted.jpg" />';
                document.getElementById("nameError").style.display='inline';  
            }
            
            if(xmlHttp.responseText.substring(1,2)=='1'){
                document.getElementById("orgError").innerHTML='<img class="message" src="images/cancel.jpg" />';
                document.getElementById("orglError").style.display='inline';
                document.getElementById("txtOrganization").focus();    
            }
            else{
                document.getElementById("orgError").innerHTML='<img class="message" src="images/accepted.jpg" />';
                document.getElementById("orgError").style.display='inline';  
            }
            
            if(xmlHttp.responseText.substring(2,3)=='1'){
                document.getElementById("mailError").innerHTML='<img class="message" src="images/cancel.jpg" />';
                document.getElementById("mailError").style.display='inline';
                document.getElementById("txtMail").focus();    
            }
            else{
                document.getElementById("mailError").innerHTML='<img class="message" src="images/accepted.jpg" />';
                document.getElementById("mailError").style.display='inline';  
            }
            
            if(xmlHttp.responseText.substring(3,4)=='1'){
                document.getElementById("commError").innerHTML='<img class="message" src="images/cancel.jpg" />';
                document.getElementById("commError").style.display='inline';
                document.getElementById("txtComment").focus();    
            }
            else{
                document.getElementById("commError").innerHTML='<img class="message" src="images/accepted.jpg" />';
                document.getElementById("commError").style.display='inline';  
            }

            if(xmlHttp.responseText.substring(4,5)=='1'){
                document.getElementById("captchaError").innerHTML='<img class="message" src="images/cancel.jpg" />';
                document.getElementById("captchaError").style.display='inline';
                document.getElementById("captcha").src = 'securimage_show.php?sid=' + Math.random();
                document.getElementById("txtValid").value = '';
                document.getElementById("txtValid").focus();    
            }
            else{
                document.getElementById("captchaError").innerHTML='<img class="message" src="images/accepted.jpg" />';
                document.getElementById("captchaError").style.display='inline';  
            }
            
            if(xmlHttp.responseText=='9'){
                alert('Su Mensaje ha sido enviado...');
                document.getElementById("txtName").value = '';
				document.getElementById("nameError").innerHTML='';
                document.getElementById("txtOrganization").value = '';
				document.getElementById("orgError").innerHTML='';
                document.getElementById("txtMail").value = '';
				document.getElementById("mailError").innerHTML='';
                document.getElementById("txtComment").value = '';
				document.getElementById("commError").innerHTML='';
                document.getElementById("txtValid").value = '';
				document.getElementById("captchaError").innerHTML='';
            }
            else{
                alert('Error al enviar Comentario');
            }
        }
        else{
            alert('Error al enviar Comentario');
            document.getElementById("txtName").focus();
        }
    }
    }
}