clean IE code (#3092)

zk/src/main/resources/web/js/zk/anima.ts

@@ -412,10 +412,8 @@ export namespace anima_global {
 					* fixed a bug of the finished animation for IE
 					* refix for ZK-568: Open combobox then select last item. reopen combobox then you should see selected item without scroll
 					*/
-					var zkie = zk.ie;
 					// ZK_3789: refine ZK-3695, fire down onRestore after the wrapper was removed
 					zWatch.fireDown('onRestore', wgt);
-					if (zkie == 10) zk(self.jq[0]).redoCSS();
 					zUtl.fireShown(wgt);
 				} else {
 					self.jq.hide();

zk/src/main/resources/web/js/zk/au.ts

@@ -1654,9 +1654,7 @@ export namespace au_global {
 			export function download(url: string): void {
 				if (url) {
 					var ifr: HTMLIFrameElement = jq('#zk_download')[0] as HTMLIFrameElement,
-						ie = zk.ie,
 						sbu = zk.skipBfUnload;
-					if (ie) zk.skipBfUnload = true;
 
 					if (!ifr) {
 						ifr = document.createElement('iframe');
@@ -1667,12 +1665,6 @@ export namespace au_global {
 					}
 
 					ifr.src = url; //It is OK to reuse the same iframe
-
-					// Workaround for IE11: wait a second (not perfect) for iframe loading
-					if (ie === 11)
-						setTimeout(function () {
-							zk.skipBfUnload = sbu;
-						}, 1000);
 				}
 			}
 			/**
@@ -2183,10 +2175,7 @@ export namespace au_global {
 					// so we have to do the same as that code in Window.js
 					setTimeout(function () {
 						zk.afterAnimate(function () {
-							if (zk.ie9_)
-								wgt.focus(100);
-							else
-								wgt.focus(0); //wgt.focus() failed in FF
+							wgt.focus(0); //wgt.focus() failed in FF
 						}, -1);
 					});
 				}