diff --git a/Frontend/tools/xpath.html b/Frontend/tools/xpath.html
index d10a60b..c7ed0a9 100644
--- a/Frontend/tools/xpath.html
+++ b/Frontend/tools/xpath.html
@@ -29,9 +29,10 @@
                         </select>
                         <label for="versions">XPath version:</label>
                         <select name="versions" id="versions">
-                            <option value="2.0">1.0/2.0</option>
-                            <option value="3.0">3.0</option>
-                            <option value="3.1">3.1</option>
+                            <option class="hideable libxml xalan"value="1.0">1.0</option>
+                            <option class="hideable saxon" value="2.0">2.0</option>
+                            <option class="hideable saxon" value="3.0">3.0</option>
+                            <option class="hideable saxon" value="3.1">3.1</option>
                         </select>
                     </div>
                     <button class="action-button active" id="defaultXMLButton" style="padding: 3px 10px;"
@@ -3067,6 +3068,31 @@
 
 
     <script>
+        function processVersionSelector() {
+            var processor = getProcessor();
+            var hideableOptions = document.getElementsByClassName("hideable");
+            for (let i = 0; i < hideableOptions.length; i++) {
+               hideableOptions[i].style = "display: none;";
+            }
+            if (processor == "xalan" || processor == "libxml") {
+                var xalanOptions = document.getElementsByClassName("xalan");
+                for (let i = 0; i < xalanOptions.length; i++) {
+                    xalanOptions[i].style = "";
+                }
+                document.getElementById("versions").selectedIndex = 0;
+            }
+            else {
+                var saxonOptions = document.getElementsByClassName("saxon");
+                for (let i = 0; i < saxonOptions.length; i++) {
+                    saxonOptions[i].style = "";
+                }
+                document.getElementById("versions").selectedIndex = 3;
+                
+            }
+            processTooltip();
+
+        }
+
         function processTooltip() {
             var filter = "collapse" + getVersion();
             var collList;
@@ -3087,6 +3113,9 @@
                 hideList(document.getElementsByName("collapse30"));
                 hideList(document.getElementsByName("collapse31"));
             }
+
+
+
             // if (checkDefault(document.getElementById("xmlArea").value.trim()) || document.getElementById("xmlArea").value.trim() == "") {
             //     document.getElementById("defaultXMLButton").classList.toggle("active", true);
             // } else {
@@ -3176,6 +3205,7 @@
             setDefaultContent(document.getElementById("transformArea"), 'Insert XPath expression here');
             console.log("init");
             processTooltip();
+            processVersionSelector();
             tool.addEventListener('change', event => {
                 //Check if script was called from textarea or selector
                 var targetID = event.target.getAttribute('id');
@@ -3183,6 +3213,7 @@
                     return;
                 }
                 processTooltip();
+                processVersionSelector();
             })
             tool.addEventListener('click', event => {
                 //Check if script was called from textarea or selector
@@ -3191,6 +3222,7 @@
                     return;
                 }
                 processTooltip();
+                processVersionSelector();
             })
             tool.addEventListener('change', event => {
                 //Check if script was called from textarea or selector
@@ -3199,6 +3231,7 @@
                     return;
                 }
                 processTooltip();
+                processVersionSelector();
             })
         }
     </script>
diff --git a/Frontend/tools/xslt.html b/Frontend/tools/xslt.html
index f1656e9..131fd3a 100644
--- a/Frontend/tools/xslt.html
+++ b/Frontend/tools/xslt.html
@@ -1131,7 +1131,7 @@
             console.log("processTooltip");
 
 
-            if (getProcInfo() == "xalan") {
+            if (getProcInfo() == "xalan" || getProcInfo() == "libxml") {
                 document.getElementById("tooltipFunctionInfo").innerText = "XSLT 1.0 functions";
                 document.getElementById("processorTooltipInfo").innerText = "Supports XSLT 1.0";
                 hideList(document.getElementsByName("collapse30"));