diff --git a/htdocs/core/class/html.form.class.php b/htdocs/core/class/html.form.class.php
index 0b5778a512a..b29f7bc5bf3 100644
--- a/htdocs/core/class/html.form.class.php
+++ b/htdocs/core/class/html.form.class.php
@@ -965,18 +965,23 @@ class Form
     		}
     		// mode 1
     		$urloption='htmlname='.$htmlname.'&outjson=1&filter='.$filter;
-    		print ajax_autocompleter($selected, $htmlname, DOL_URL_ROOT.'/societe/ajax/company.php', $urloption, $conf->global->COMPANY_USE_SEARCH_TO_SELECT, 0, $ajaxoptions);
+    		$out.=  ajax_autocompleter($selected, $htmlname, DOL_URL_ROOT.'/societe/ajax/company.php', $urloption, $conf->global->COMPANY_USE_SEARCH_TO_SELECT, 0, $ajaxoptions);
+			$out.='<style type="text/css">
+					.ui-autocomplete {
+						z-index: 150;
+					}
+				</style>';
     		if (empty($hidelabel)) print $langs->trans("RefOrLabel").' : ';
     		else if ($hidelabel > 1) {
     			if (! empty($conf->global->MAIN_HTML5_PLACEHOLDER)) $placeholder=' placeholder="'.$langs->trans("RefOrLabel").'"';
     			else $placeholder=' title="'.$langs->trans("RefOrLabel").'"';
     			if ($hidelabel == 2) {
-    				print img_picto($langs->trans("Search"), 'search');
+    				$out.=  img_picto($langs->trans("Search"), 'search');
     			}
     		}
-            print '<input type="text" class="minwidth100" name="search_'.$htmlname.'" id="search_'.$htmlname.'" value="'.$selected_input_value.'"'.$placeholder.' '.(!empty($conf->global->THIRDPARTY_SEARCH_AUTOFOCUS) ? 'autofocus' : '').' />';
+            $out.=  '<input type="text" class="minwidth100" name="search_'.$htmlname.'" id="search_'.$htmlname.'" value="'.$selected_input_value.'"'.$placeholder.' '.(!empty($conf->global->THIRDPARTY_SEARCH_AUTOFOCUS) ? 'autofocus' : '').' />';
     		if ($hidelabel == 3) {
-    			print img_picto($langs->trans("Search"), 'search');
+    			$out.=  img_picto($langs->trans("Search"), 'search');
     		}
     	}
     	else
diff --git a/htdocs/core/lib/ajax.lib.php b/htdocs/core/lib/ajax.lib.php
index 0193a33b305..e7d8a7cf538 100644
--- a/htdocs/core/lib/ajax.lib.php
+++ b/htdocs/core/lib/ajax.lib.php
@@ -181,10 +181,12 @@ function ajax_autocompleter($selected, $htmlname, $url, $urloption='', $minLengt
     							});
     						}
     						console.log("ajax_autocompleter new value selected, we trigger change on original component so field #search_'.$htmlname.'");
+							
     						$("#search_'.$htmlname.'").trigger("change");	// We have changed value of the combo select, we must be sure to trigger all js hook binded on this event. This is required to trigger other javascript change method binded on original field by other code.
     					}
     					,delay: 500
 					}).data("ui-autocomplete")._renderItem = function( ul, item ) {
+						  
 						return $("<li>")
 						.data( "ui-autocomplete-item", item ) // jQuery UI > 1.10.0
 						.append( \'<a><span class="tag">\' + item.label + "</span></a>" )