function comment_add(pub_id) {
		var civ = document.getElementById("comment_add");
		
		if (civ.className == "invis") {
			civ.className = "c_add";
			document.getElementById('comment_add_link').className = 'invis';
			civ.innerHTML = "<img src=\"/img/loading.gif\" alt=\"Loading...\" class=\"loading2\"\/>";
			
		
			
			var xmlhttp = getXmlHttp();
				xmlhttp.open('GET', '/xml_comment_add?pub_id='+pub_id, true);
				xmlhttp.onreadystatechange = function() {
				  if (xmlhttp.readyState == 4) {
					 if(xmlhttp.status == 200) {

						civ.innerHTML = xmlhttp.responseText;
						document.comment_add_form.message.focus();
						window.scrollBy(0,50);
						
					}
				  }
				};
				xmlhttp.send(null);
		
		}
	
	
	
}


function comment_show(pub_id,page_num) {
	
	var civ = document.getElementById("comment_show");
	
		civ.className = "c_show";
		document.getElementById("comment_show_link").className = "invis";
		
		civ.innerHTML = "<img src=\"/img/loading.gif\" alt=\"Loading...\" class=\"loading2\"\/>";

		var xmlhttp = getXmlHttp()
			xmlhttp.open('GET', '/xml_comment_show?pub_id='+pub_id+'&page='+page_num, true);
			xmlhttp.onreadystatechange = function() {
			  if (xmlhttp.readyState == 4) {
			     if(xmlhttp.status == 200) {

				   document.getElementById("comment_show").innerHTML = xmlhttp.responseText;
				   window.scrollBy(0,50);
			         }
			  }
			};
			xmlhttp.send(null);
		
	
	
	
}



function comment_submit_logged (pub_id) {


			var message = document.forms['comment_add_form'].message.value;
			var xmlhttp = getXmlHttp();
			var params = 'send=true&pub_id='+pub_id+'&message='+encodeURIComponent(message);
			xmlhttp.open('POST', '/xml_comment_add', true);
			xmlhttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded')

			xmlhttp.onreadystatechange = function() {
			  if (xmlhttp.readyState == 4) {
			     if(xmlhttp.status == 200) {

				 
				 	var result = xmlhttp.responseText;
					var resultflag = result.substr(2,8);
				 			if (resultflag=="is_error") { 
								var result = result.substr(12);
								show_message(result);
							} else {
								show_message("Your message has been sent.");
								document.getElementById('comment_add').className="invis";
								comment_add(pub_id);
								comment_show(pub_id);
								
							}
		         }
			  }
			};
			xmlhttp.send(params);


			



}

function comment_submit (pub_id) {


			var username = document.forms['comment_add_form'].user_name.value;
			var useremail = document.forms['comment_add_form'].user_email.value;
			var message = document.forms['comment_add_form'].message.value;
			
			var xmlhttp = getXmlHttp();
			var params = 'send=true&pub_id='+pub_id+'&username='+encodeURIComponent(username)+'&useremail='+encodeURIComponent(useremail)+'&message='+encodeURIComponent(message);
			xmlhttp.open('POST', '/xml_comment_add', true);
			xmlhttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded')

			xmlhttp.onreadystatechange = function() {
			  if (xmlhttp.readyState == 4) {
			     if(xmlhttp.status == 200) {

				 
				 	var result = xmlhttp.responseText;
					var resultflag = result.substr(2,8);
				 			if (resultflag=="is_error") { 
								var result = result.substr(12);
								show_message(result);
							} else {
								show_message("Your message has been sent.");
								
								document.getElementById('comment_add').className="invis";
								comment_add(pub_id);
								comment_show(pub_id);
								
								
							}
		         }
			  }
			};
			xmlhttp.send(params);


			



}