diff --git a/js/legacy/report.compressed.js b/js/legacy/report.compressed.js
index 1dc322615b..900c9cbb48 100644
--- a/js/legacy/report.compressed.js
+++ b/js/legacy/report.compressed.js
@@ -185,7 +185,7 @@ _r.DataTable.prototype.run=function(){if(this.validate&&!this.validate())
 return;if(_r.rb_con.cur_rb){if(_r.rb_con.cur_rb.large_report==1){msgprint("This is a very large report and cannot be shown in the browser as it is likely to make your browser very slow.<br><br>Please click on 'Export' to open in a spreadsheet");return;}
 _r.rb_con.cur_rb.mytabs.items['Result'].expand();}
 var me=this;this._get_query();if(this.set_data){this.show_result(this.set_data);this.set_data=null;return;}
-$ds(this.fetching_tag);if(isFF)this.clear_all();var args={'query':me.query,'report_name':'_r.DataTable','show_deleted':1,'sc_id':me.search_criteria?me.search_criteria.name:'','filter_values':me.filter_vals?docstring(me.filter_vals):'','roles':'["'+user_roles.join('","')+'"]'}
+$ds(this.fetching_tag);if($.browser.mozilla)this.clear_all();var args={'query':me.query,'report_name':'_r.DataTable','show_deleted':1,'sc_id':me.search_criteria?me.search_criteria.name:'','filter_values':me.filter_vals?docstring(me.filter_vals):'','roles':'["'+user_roles.join('","')+'"]'}
 if(this.is_simple)args.is_simple=1;$c('webnotes.widgets.query_builder.runquery',args,function(r,rt){$dh(me.fetching_tag);me.show_result(r,rt);});}
 _r.DataTable.prototype.clear_all=function(){if(this.htab&&this.htab.parentNode){this.htab.parentNode.removeChild(this.htab);delete this.htab;}
 if(this.tab&&this.tab.parentNode){this.tab.parentNode.removeChild(this.tab);delete this.tab;}
diff --git a/js/legacy/utils/browser_detect.js b/js/legacy/utils/browser_detect.js
deleted file mode 100644
index 91e29c492e..0000000000
--- a/js/legacy/utils/browser_detect.js
+++ /dev/null
@@ -1,44 +0,0 @@
-// Copyright (c) 2012 Web Notes Technologies Pvt Ltd (http://erpnext.com)
-// 
-// MIT License (MIT)
-// 
-// Permission is hereby granted, free of charge, to any person obtaining a 
-// copy of this software and associated documentation files (the "Software"), 
-// to deal in the Software without restriction, including without limitation 
-// the rights to use, copy, modify, merge, publish, distribute, sublicense, 
-// and/or sell copies of the Software, and to permit persons to whom the 
-// Software is furnished to do so, subject to the following conditions:
-// 
-// The above copyright notice and this permission notice shall be included in 
-// all copies or substantial portions of the Software.
-// 
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
-// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A 
-// PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT 
-// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF 
-// CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE 
-// OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-// 
-
-/* Version Detect */
-
-var appVer = navigator.appVersion.toLowerCase();
-var is_minor = parseFloat(appVer);
-var is_major = parseInt(is_minor);
-var iePos = appVer.indexOf('msie');
-if (iePos !=-1) {
-	is_minor = parseFloat(appVer.substring(iePos+5,appVer.indexOf(';',iePos)))
-	is_major = parseInt(is_minor);
-}
-var isIE = (iePos!=-1);
-var isIE6 = (isIE && is_major <= 6);
-var isIE7 = (isIE && is_major >= 7);
-if (/Firefox[\/\s](\d+\.\d+)/.test(navigator.userAgent)){ //test for Firefox/x.x or Firefox x.x (ignoring remaining digits);
-	var isFF = 1;
-	var ffversion=new Number(RegExp.$1) // capture x.x portion and store as a number
-	if (ffversion>=3) var isFF3 = 1;
-	else if (ffversion>=2) var isFF2 = 1;
-	else if (ffversion>=1) var isFF1 = 1;
-}
-var isSafari = navigator.userAgent.indexOf('Safari')!=-1 ? 1 : 0;
-var isChrome = navigator.userAgent.indexOf('Chrome')!=-1 ? 1 : 0;
\ No newline at end of file
diff --git a/js/legacy/utils/handler.js b/js/legacy/utils/handler.js
index 3100a6443c..ec4d052d57 100644
--- a/js/legacy/utils/handler.js
+++ b/js/legacy/utils/handler.js
@@ -47,7 +47,7 @@ var pending_req = 0;
 
 // new XMLHttpRequest object
 function newHttpReq() { 
-	if (!isIE) 
+	if (!$.browser.msie) 
  		var r=new XMLHttpRequest(); 
 	else if (window.ActiveXObject) 
 		var r=new ActiveXObject("Microsoft.XMLHTTP"); 
diff --git a/js/legacy/webpage/freeze_page.js b/js/legacy/webpage/freeze_page.js
index c092edd757..31eb036045 100644
--- a/js/legacy/webpage/freeze_page.js
+++ b/js/legacy/webpage/freeze_page.js
@@ -29,7 +29,7 @@ function freeze(msg, do_freeze) {
 	// blur
 	if(!dialog_back) {
 		dialog_back = $a($i('body_div'), 'div', 'dialog_back');
-		if(isIE) dialog_back.style['filter'] = 'alpha(opacity=60)';
+		$(dialog_back).css('opacity', 0.6);
 	}
 	$ds(dialog_back);
 
diff --git a/js/legacy/widgets/autosuggest.js b/js/legacy/widgets/autosuggest.js
index 9442a86a1f..3572420ac9 100644
--- a/js/legacy/widgets/autosuggest.js
+++ b/js/legacy/widgets/autosuggest.js
@@ -416,11 +416,7 @@ AutoSuggest.prototype.createList = function(arr) {
 	}
 
 	this.body = div;
-	
-	if(isIE) {
-		$y(div,{border:'1px solid #444'});
-	}
-	
+		
 	// currently no item is highlighted
 	//
 	
@@ -477,15 +473,15 @@ AutoSuggest.prototype.setHighlight = function(n)
 	if(this.body.scrollbars) {
 		var cur_y = 0;
 		for(var i=0; i<this.iHigh-1; i++)
-			cur_y += (isIE ? list.childNodes[i].offsetHeight : list.childNodes[i].clientHeight);
+			cur_y += ($.browser.msie ? list.childNodes[i].offsetHeight : list.childNodes[i].clientHeight);
 		
 		// scroll up
 		if(cur_y < this.body.scrollTop)
 			this.body.scrollTop = cur_y;
 			
 		// scroll down
-		ff_delta = (isFF ? cint(this.iHigh/2) : 0);
-		var h = (isIE ? ele.offsetHeight : ele.clientHeight);
+		ff_delta = ($.browser.mozilla ? cint(this.iHigh/2) : 0);
+		var h = ($.browser.msie ? ele.offsetHeight : ele.clientHeight);
 		if(cur_y >= (this.body.scrollTop + this.oP.maxheight - h))
 			this.body.scrollTop = cur_y - this.oP.maxheight + h + ff_delta;
 	}
diff --git a/js/legacy/widgets/report_builder/datatable.js b/js/legacy/widgets/report_builder/datatable.js
index b5156ad467..a9e6ae560e 100644
--- a/js/legacy/widgets/report_builder/datatable.js
+++ b/js/legacy/widgets/report_builder/datatable.js
@@ -304,7 +304,7 @@ _r.DataTable.prototype.run = function() {
   }
     
   $ds(this.fetching_tag);
-  if(isFF)this.clear_all();
+  if($.browser.mozilla)this.clear_all();
   
   var args = { 
 			'query':me.query,
diff --git a/py/webnotes/profile.py b/py/webnotes/profile.py
index 5984402742..984e2794ab 100644
--- a/py/webnotes/profile.py
+++ b/py/webnotes/profile.py
@@ -205,7 +205,8 @@ class Profile:
 		t = webnotes.conn.sql("""select email, first_name, last_name, 
 			recent_documents from tabProfile where name = %s""", self.name)[0]
 
-		self.build_permissions()
+		if not self.can_read:
+			self.build_permissions()
 
 		d = {}
 		d['name'] = self.name