diff --git a/report-jtreg-comparator/src/main/java/io/jenkins/plugins/report/jtreg/main/comparator/StackTraceCompare.java b/report-jtreg-comparator/src/main/java/io/jenkins/plugins/report/jtreg/main/comparator/StackTraceCompare.java
index 09f46d7..9d7739b 100644
--- a/report-jtreg-comparator/src/main/java/io/jenkins/plugins/report/jtreg/main/comparator/StackTraceCompare.java
+++ b/report-jtreg-comparator/src/main/java/io/jenkins/plugins/report/jtreg/main/comparator/StackTraceCompare.java
@@ -94,8 +94,14 @@ public static void compareTraces(Map<String, ArrayList<String>> failedMap, Optio
                     stringToPut = String.valueOf(getTraceSimilarity(reference, second));
                 }
 
-                table[i][jobBuilds.indexOf(value) + 1] =
-                        options.getFormatter().createCell(new JtregPluginServicesLinkWithTooltip(stringToPut));
+                List<JtregPluginServicesLinkWithTooltip> maybeSeveralComaprisons = new ArrayList<>();
+                maybeSeveralComaprisons.add(new JtregPluginServicesLinkWithTooltip(stringToPut, null, getLinksTooltip(), true));
+                //this is just demo
+                //FIXME repace by real logic
+                if ((jobBuilds.indexOf(value) + i + 1 )%2 == 0){
+                    maybeSeveralComaprisons.add(new JtregPluginServicesLinkWithTooltip("X", "test", getLinksTooltip(), true));
+                }
+                table[i][jobBuilds.indexOf(value) + 1] = options.getFormatter().createCell(maybeSeveralComaprisons);
             }
 
             // TODO delete, just for debug logging
@@ -108,6 +114,15 @@ public static void compareTraces(Map<String, ArrayList<String>> failedMap, Optio
         options.getFormatter().printTable(table, failedTests.size() + 1, jobBuilds.size() + 1);
     }
 
+    private static List<JtregPluginServicesLinkWithTooltip> getLinksTooltip() {
+        List<JtregPluginServicesLinkWithTooltip> list = new ArrayList<>();
+        list.add(new JtregPluginServicesLinkWithTooltip("this is tool tip of comparison of $TEST trace of  $job1:$X x $job2:$Y"));
+        list.add(new JtregPluginServicesLinkWithTooltip("use this as base", "some link", null));
+        list.add(new JtregPluginServicesLinkWithTooltip("show diff agaisnt base", "some otjer link", null));
+        list.add(new JtregPluginServicesLinkWithTooltip("show diff ind ifferent setup", "other link", null));
+        return list;
+    }
+
     private static String getTestTrace(File build, String testName, Options.Side cutSide, int cutLength) {
         try {
             BuildReportExtended bex = bs.parseBuildReportExtended(new RunWrapperFromDir(build), null);
diff --git a/report-jtreg-comparator/src/test/java/io/jenkins/plugins/report/jtreg/main/comparator/PrintTableTest.java b/report-jtreg-comparator/src/test/java/io/jenkins/plugins/report/jtreg/main/comparator/PrintTableTest.java
index 79ad921..73d94c6 100644
--- a/report-jtreg-comparator/src/test/java/io/jenkins/plugins/report/jtreg/main/comparator/PrintTableTest.java
+++ b/report-jtreg-comparator/src/test/java/io/jenkins/plugins/report/jtreg/main/comparator/PrintTableTest.java
@@ -79,6 +79,11 @@ public void testHtmlTablePrinting() {
         f.printTable(table, 4, 4);
 
         Assertions.assertEquals("<style>\n" +
+                ".tooltip {\n" + "  position: relative;\n" + "  display: inline-block;\n" + "}\n" + ".tooltip .tooltiptext {\n"
+                        + "  visibility: hidden;\n" + "  width: 240px;\n" + "  background-color: grey;\n" + "  color: #fff;\n"
+                        + "  text-align: left;\n" + "  border-radius: 6px;\n" + "  padding: 5px 0;\n" + "  /* Position the tooltip */\n"
+                        + "  position: absolute;\n" + "  z-index: 1;\n" + "  top: 100%;\n" + "  left: 50%;\n" + "  margin-left: -60px;}\n"
+                        + ".tooltip:hover .tooltiptext {\n" + "  visibility: visible;\n" + "}\n" +
                 ".contents {\n" +
                 "    font-family: monospace, monospace;\n" +
                 "}\n" +
diff --git a/report-jtreg-lib/src/main/java/io/jenkins/plugins/report/jtreg/Constants.java b/report-jtreg-lib/src/main/java/io/jenkins/plugins/report/jtreg/Constants.java
index e7f64b0..952daf4 100644
--- a/report-jtreg-lib/src/main/java/io/jenkins/plugins/report/jtreg/Constants.java
+++ b/report-jtreg-lib/src/main/java/io/jenkins/plugins/report/jtreg/Constants.java
@@ -32,6 +32,28 @@ final public class Constants {
     public static final int VAGUE_QUERY_LENGTH_THRESHOLD = 4;
     public static final String COMPARATOR_TABLE_CSS =
                     "<style>\n" +
+                            ".tooltip {\n" +
+                            "  position: relative;\n" +
+                            "  display: inline-block;\n" +
+                            "}\n" +
+                            ".tooltip .tooltiptext {\n" +
+                            "  visibility: hidden;\n" +
+                            "  width: 240px;\n" +
+                            "  background-color: grey;\n" +
+                            "  color: #fff;\n" +
+                            "  text-align: left;\n" +
+                            "  border-radius: 6px;\n" +
+                            "  padding: 5px 0;\n" +
+                            "  /* Position the tooltip */\n" +
+                            "  position: absolute;\n" +
+                            "  z-index: 1;\n" +
+                            "  top: 100%;\n" +
+                            "  left: 50%;\n" +
+                            "  margin-left: -60px;" +
+                            "}\n" +
+                            ".tooltip:hover .tooltiptext {\n" +
+                            "  visibility: visible;\n" +
+                            "}\n" +
                     ".contents {\n" +
                     "    font-family: monospace, monospace;\n" +
                     "}\n" +
diff --git a/report-jtreg-lib/src/main/java/io/jenkins/plugins/report/jtreg/formatters/ColorFormatter.java b/report-jtreg-lib/src/main/java/io/jenkins/plugins/report/jtreg/formatters/ColorFormatter.java
index 7088eca..752cdc8 100644
--- a/report-jtreg-lib/src/main/java/io/jenkins/plugins/report/jtreg/formatters/ColorFormatter.java
+++ b/report-jtreg-lib/src/main/java/io/jenkins/plugins/report/jtreg/formatters/ColorFormatter.java
@@ -155,7 +155,10 @@ public void printTable(JtregPluginServicesCell[][] table, int rowSize, int colum
                         // Xs will be red
                     } else if (table[i][j].contentEquals("X")) {
                         super.print(Red + table[i][j].renderCell() + ResetAll + " ");
-                    } else if (table[i][j].contentMatches("^[1-9]?[0-9]$|^100$")) {
+                    }
+                    //this will need to be redone per-item
+                    //JtregPluginServicesCell currently do not have method for that, but should be easy to do
+                    else if (table[i][j].contentMatches("^[1-9]?[0-9]$|^100$")) {
                         // the table is displaying numbers from 0-100 (percentage), color code them
                         int number = Integer.parseInt(table[i][j].getCellContent());
                         if (number == 100) {
diff --git a/report-jtreg-lib/src/main/java/io/jenkins/plugins/report/jtreg/formatters/HtmlFormatter.java b/report-jtreg-lib/src/main/java/io/jenkins/plugins/report/jtreg/formatters/HtmlFormatter.java
index b5f2b8f..b4deb45 100644
--- a/report-jtreg-lib/src/main/java/io/jenkins/plugins/report/jtreg/formatters/HtmlFormatter.java
+++ b/report-jtreg-lib/src/main/java/io/jenkins/plugins/report/jtreg/formatters/HtmlFormatter.java
@@ -166,7 +166,11 @@ public void printTable(JtregPluginServicesCell[][] table, int rowSize, int colum
                 if (table[i][j] != null) {
                     if (table[i][j].contentEquals("X")) {
                         super.println("<td>" + table[i][j].renderCell() + "</td>");
-                    } else if (table[i][j].contentMatches("^[1-9]?[0-9]$|^100$")) {
+
+                    }
+                    //this will need to be redone per-item
+                    //JtregPluginServicesCell currently do not have method for that, but should be easy to do
+                    else if (table[i][j].contentMatches("^[1-9]?[0-9]$|^100$")) {
                         // the table is displaying numbers from 0-100 (percentage), color code them
                         int number = Integer.parseInt(table[i][j].getCellContent());
                         if (number == 100) {
diff --git a/report-jtreg-lib/src/main/java/io/jenkins/plugins/report/jtreg/formatters/JtregPluginServicesCell.java b/report-jtreg-lib/src/main/java/io/jenkins/plugins/report/jtreg/formatters/JtregPluginServicesCell.java
index f17d348..2e84816 100644
--- a/report-jtreg-lib/src/main/java/io/jenkins/plugins/report/jtreg/formatters/JtregPluginServicesCell.java
+++ b/report-jtreg-lib/src/main/java/io/jenkins/plugins/report/jtreg/formatters/JtregPluginServicesCell.java
@@ -5,14 +5,7 @@
 import java.util.Collections;
 import java.util.List;
 
-import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
-
-/**
- * todo, replace dummy content by formatting + text?
- * todo replace by interface and have formatter based cell?
- *
- * todo, rmeove the  SuppressWarnings once all ewuals and hashes are identified and fixed
- */
+
 public class JtregPluginServicesCell {
 
     private final List<JtregPluginServicesLinkWithTooltip> content;
@@ -46,7 +39,7 @@ public String getCellContent() {
     }
 
     public String toString() {
-        throw  new RuntimeException("remove usage in favour of renderCell() (or getCellContent)");
+        return renderCell();
     }
 
     public int cellWidth() {
@@ -63,7 +56,7 @@ public int contetntHashCode() {
         return  getCellContent().hashCode();
     }
     public int hashCode() {
-        throw  new RuntimeException("remove usage in favour of contetntHashCode()");
+        return contetntHashCode();
     }
 
     /**
@@ -74,9 +67,8 @@ public boolean contentEquals(Object obj) {
         return  getCellContent().equals(obj);
     }
 
-    @SuppressFBWarnings({"EQ_UNUSUAL"})
     public boolean equals(Object obj) {
-        throw  new RuntimeException("remove usage in favour of contentEquals()");
+        return contentEquals(obj);
     }
 
     public boolean contentMatches(String s) {
diff --git a/report-jtreg-lib/src/main/java/io/jenkins/plugins/report/jtreg/formatters/JtregPluginServicesLinkWithTooltip.java b/report-jtreg-lib/src/main/java/io/jenkins/plugins/report/jtreg/formatters/JtregPluginServicesLinkWithTooltip.java
index 2173a60..448ef62 100644
--- a/report-jtreg-lib/src/main/java/io/jenkins/plugins/report/jtreg/formatters/JtregPluginServicesLinkWithTooltip.java
+++ b/report-jtreg-lib/src/main/java/io/jenkins/plugins/report/jtreg/formatters/JtregPluginServicesLinkWithTooltip.java
@@ -118,10 +118,10 @@ public String render() {
                     sb.append(" ");
                 }
             }
-            sb.append("<span>\n");
+            sb.append("</span>\n");
         }
         if (!tooltips.isEmpty()) {
-            sb.append("<div>\n");
+            sb.append("</div>\n");
         }
         return sb.toString();
     }