[svn r10129] Better element existence check in logit_ functions - avoids JS warnings

main/newscorm/scorm_api.php

@@ -634,20 +634,24 @@ function dokeos_save_asset(){
  * @param	integer Priority (0 for top priority, 3 for lowest)
  */
 function logit_scorm(message,priority){
-	if(frames["lp_log_name"] && scorm_logs>priority){
+	if(scorm_logs>priority){
+		if(frames["lp_log_name"] && frames["lp_log_name"].document && frames["lp_log_name"].document.getElementById && frames["lp_log_name"].document.getElementById('log_content')){
 			frames["lp_log_name"].document.getElementById("log_content").innerHTML += "SCORM: " + message + "<br/>";
 		}
 	}
+}
 /**
  * Logs information about LMS activity into the log frame
  * @param	string	Message to log
  * @param	integer Priority (0 for top priority, 3 for lowest)
  */
 function logit_lms(message,priority){
-	if(frames["lp_log_name"] && lms_logs>priority){
+	if(lms_logs>priority){
+		if(frames["lp_log_name"] && frames["lp_log_name"].document && frames["lp_log_name"].document.getElementById && frames["lp_log_name"].document.getElementById('log_content')){
 			frames["lp_log_name"].document.getElementById("log_content").innerHTML += "LMS: " + message + "<br/>";
 		}
 	}
+}
 
 /**
  * update the Table Of Contents frame, by changing CSS styles, mostly