function initdatamodel(scoid){
        prerequrl = cfgwwwroot + "/mod/scorm/prereqs.php?a=" + scormid + "&scoid=" + scoid + "&attempt=" + attempt + "&mode=" + viewmode + "&currentorg=" + currentorg + "&sesskey=" + sesskey;
        datamodelurlparams = "id=" + cmid + "&a=" + scormid + "&sesskey=" + sesskey + "&attempt=" + attempt + "&scoid=" + scoid;

        //
        // Datamodel inizialization
        //
        cmi = new Object();
		cmi.core = new Object();
		cmi.core.score = new Object();
		cmi.objectives = new Object();
		cmi.student_data = new Object();
		cmi.student_preference = new Object();
		cmi.interactions = new Object();
		// deprecated evaluation attributes
		cmi.evaluation = new Object();
		cmi.evaluation.comments = new Object();

        // Navigation Object
        nav = new Object();
        for (element in datamodel[scoid]) {
            if (element.match(/\.n\./) == null) {
                if (typeof datamodel[scoid][element].defaultvalue != 'undefined') {	
					// MODIFIED
					try{				
	                    eval(element + ' = datamodel["' + scoid + '"]["' + element + '"].defaultvalue;');
					}
					catch(ex){
						// Nothing to do...
					}
                } else {
					// MODIFIED
					if(element.indexOf(".score._children") == -1){
                    	eval(element + ' = "";');
					}
                }
            }
        }

        eval(cmiobj[scoid]);
        eval(cmiint[scoid]);

        if (cmi.core.lesson_status == '') {
            cmi.core.lesson_status = 'not attempted';
        }
    }