LightBox shows on ie but not on chrome

Scheduler Javascript
#1

Hi,

dhtmlxScheduler v.4.1.0 , ie 11.096, chrome 43.0.2357.134 m.
Any Hints?
thanks!

onBeforeLightbox Code,

scheduler.attachEvent(“onBeforeLightbox”, function(id, e) {
var ev = scheduler.getEvent(id);

			/* aggiunge info aggiuntive alla sezione template */
			if (ev.calendarinfofield != undefined && ev.calendarinfofield != '') {
			    ev.my_template = "<b><&!TextLangJS.OtherInformation!&>: </b>" + ev.calendarinfofield;			 
			}
			 
			/* eventuale link al dettaglio del record */ 
			if (ev.linkfield != undefined && ev.linkfield != '') {
			    if (ev.my_template!='') {
					ev.my_template = ev.my_template + "<br>";
				}				
				var _link = ev.linkfield.replace(/AMPAMP/g,'&');
				ev.my_template = ev.my_template + "<b><&!TextLangJS.Detail!&>: </b>"; 
				ev.my_template = ev.my_template + "<a href='" + _link + "' target='eventDetail'><img border='0' src='Disegni/LinkInterno.gif'></a>"				 					
			}
		 
			return true;
		});
#2

Hello,
are there any script errors on the page? Is something specific happens in onBeforeLightbox handler, that could cause the issue?
Please provide a full demo, otherwise it’s hard to tell the possible reason