diff --git a/kadmos/vistoms/templates/VISTOMS.html b/kadmos/vistoms/templates/VISTOMS.html
index 730d62f80679e43c4681ed6d3ef38e0916bccba2..de4254ed7d98399183f5e9578e2097172a60cc41 100644
--- a/kadmos/vistoms/templates/VISTOMS.html
+++ b/kadmos/vistoms/templates/VISTOMS.html
@@ -50,6 +50,14 @@
 					} 
 				});
 			};
+            
+            /**
+             * Returns a random integer between min (inclusive) and max (inclusive)
+             * Using Math.round() will give you a non-uniform distribution!
+             */
+            function getRandomInt(min, max) {
+                return Math.floor(Math.random() * (max - min + 1)) + min;
+            }
 
             
             //aigner: General functions communicating with the user via bootbox after kadmos requests
@@ -20066,14 +20074,15 @@
                                                             {
                                                                 var headLine = "Tree Layout for category:\" " + category + "\", subcategory:\" " + sub_category + "\"";  
                                                                 var d3_body = d3.select("body");
-                                                                
-                                                                var treeLayoutdiv = d3_body.append("div").attr("class","treeDiv panel-default")
+                                                                var lobiID = String(getRandomInt(0,1000))
+                                                                var divClassName = "treeDiv" + lobiID;
+                                                                var treeLayoutdiv = d3_body.append("div").attr("class",divClassName+ " panel-default")
                                                                                                 .style("left","200px")
                                                                                                 .style("top","200px")
                                                                                                 .style("position", "absolute")
                                                                 treeLayoutdiv.append("div").attr("class","panel-heading")
                                                                     .append("div").attr("class","panel_title").append("h4").text(headLine)
-                                                                $('.treeDiv').lobiPanel({
+                                                                $('.' + divClassName).lobiPanel({
                                                                     reload: false,
                                                                     editTitle: false,
                                                                     unpin: false,
@@ -20082,10 +20091,10 @@
                                                                     minHeight: 200,
                                                                     maxHeight: 100000,
                                                                 });
-                                                                $('.treeDiv').lobiPanel('unpin');
+                                                                $('.'+divClassName).lobiPanel('unpin');
                                                                 var treeLayoutSVG = treeLayoutdiv.append("svg").attr("class","treeLayoutSVG")
                                                                 var treeLayout = treeLayoutSVG.append("g").attr("class","treeLayout");
-                                                                maketreeLayout(array, treeLayout, treeLayoutSVG, treeLayoutdiv, headLine, varCategories[0].description);
+                                                                maketreeLayout(array, treeLayout, treeLayoutSVG, treeLayoutdiv, divClassName, headLine, varCategories[0].description);
                                                                 show_bootBox_listMessage(functions,nodeMenu);
                                                             }
 															if (result.includes("List"))
@@ -21282,14 +21291,15 @@
 				{
                     var headLine = "Full data model tree view; Categorization: " + categoryDescr;
                     var d3_body = d3.select("body");
-                    
-                    var treeLayoutdiv = d3_body.append("div").attr("class","treeDiv panel-default")
+                    var lobiID = String(getRandomInt(0,1000))
+                    var divClassName = 'treeDiv' + lobiID;
+                    var treeLayoutdiv = d3_body.append("div").attr("class",divClassName+" panel-default")
 													.style("left",(d3.event.pageX) + "px")
 													.style("top",(d3.event.pageY - 28) + "px")
 													.style("position", "absolute")
                     treeLayoutdiv.append("div").attr("class","panel-heading")
                         .append("div").attr("class","panel_title").append("h4").text(headLine)
-                    $('.treeDiv').lobiPanel({
+                    $('.' + divClassName).lobiPanel({
                         reload: false,
                         editTitle: false,
                         unpin: false,
@@ -21298,11 +21308,10 @@
                         minHeight: 200,
                         maxHeight: 100000,
                     });
-                    $('.treeDiv').lobiPanel('unpin');
-                    
+                    $('.'+divClassName).lobiPanel('unpin');
 					var treeLayoutSVG = treeLayoutdiv.append("svg").attr("class","treeLayoutSVG")
 					var treeLayout = treeLayoutSVG.append("g").attr("class","treeLayout");
-					maketreeLayout(emptyArray, treeLayout, treeLayoutSVG, treeLayoutdiv, headLine, aCategory);
+					maketreeLayout(emptyArray, treeLayout, treeLayoutSVG, treeLayoutdiv, divClassName, headLine, aCategory);
 				}
 				
 				var childrenItems = [];
@@ -21411,7 +21420,8 @@
                         
                         var headLine = name;
                         var d3_body = d3.select("body");
-                        var divClassName = "treeDiv";
+                        var lobiID = String(getRandomInt(0,1000))
+                        var divClassName = "treeDiv" + lobiID;
                         var treeLayoutdiv = d3_body.append("div").attr("class",divClassName + " panel-default")
                                                         .style("left",(d3.event.pageX) + "px")
                                                         .style("top",(d3.event.pageY - 28) + "px")
@@ -21430,7 +21440,7 @@
                         $('.'+divClassName).lobiPanel('unpin');
                         var treeLayoutSVG = treeLayoutdiv.append("svg").attr("class","treeLayoutSVG")
                         var treeLayout = treeLayoutSVG.append("g").attr("class","treeLayout");
-                        maketreeLayout(array, treeLayout, treeLayoutSVG, treeLayoutdiv, headLine, aCategory);
+                        maketreeLayout(array, treeLayout, treeLayoutSVG, treeLayoutdiv, divClassName, headLine, aCategory);
 					}
 					//############################################################
 					
@@ -21820,8 +21830,8 @@
 					{
                         var headLine = "Tree view: " + data.from + "  →  " + data.to + "; Categorization: " + categoryDescr;
                         var d3_body = d3.select("body");
-                        
-                        var divClassName = "treeDiv";
+                        var lobiID = String(getRandomInt(0,1000))
+                        var divClassName = "treeDiv" + lobiID;
                         var treeLayoutdiv = d3_body.append("div").attr("class",divClassName + " panel-default")
                                                         .style("left",(d3.event.pageX) + "px")
                                                         .style("top",(d3.event.pageY - 28) + "px")
@@ -21840,7 +21850,7 @@
                         $('.'+divClassName).lobiPanel('unpin');
                         var treeLayoutSVG = treeLayoutdiv.append("svg").attr("class","treeLayoutSVG")
                         var treeLayout = treeLayoutSVG.append("g").attr("class","treeLayout");
-                        maketreeLayout(data.name, treeLayout, treeLayoutSVG, treeLayoutdiv, headLine, aVarCategory);
+                        maketreeLayout(data.name, treeLayout, treeLayoutSVG, treeLayoutdiv, divClassName, headLine, aVarCategory);
 					}
 					
 					function showEdgeTable(anEdge)
@@ -22040,7 +22050,7 @@
 				}
 				
                
-				function maketreeLayout(pipeData, layout, svg, div, aName, aVarCategory)
+				function maketreeLayout(pipeData, layout, svg, div, aLobiID, aName, aVarCategory)
 				{			
                     var treeData = (JSON.parse(JSON.stringify(currentGraph.variableSchemes[aVarCategory])));				
                     //aigner: Build the tree layout                    
@@ -22283,8 +22293,8 @@
                         
                         newWidth=Math.max(newWidth,getTextWidth(aName,"Arial 12pt"));
                         //aigner: Adjust height and width of the frame
-                        $('.treeDiv').lobiPanel('setWidth', newWidth + margin.top + margin.bottom +400+maxLabelLength*25+offset_tmp);
-                        $('.treeDiv').lobiPanel('setHeight', newHeight + margin.top + 2*margin.bottom+offset_tmp);
+                        $('.' + aLobiID).lobiPanel('setWidth', newWidth + margin.top + margin.bottom +400+maxLabelLength*25+offset_tmp);
+                        $('.' + aLobiID).lobiPanel('setHeight', newHeight + margin.top + 2*margin.bottom+offset_tmp);
                         div = div.attr("height", newHeight + margin.top + margin.bottom+offset_tmp)
                         div = div.attr("width", newWidth + margin.top + margin.bottom +400+maxLabelLength*25+offset_tmp)
                             .on("mousedown", function(d) {
@@ -23619,13 +23629,15 @@
 				
 				//aigner: Here the tree layout is created
                 var d3_body = d3.select("body")
-                var treeLayoutdiv = d3_body.append("div").attr("class","treeDiv panel-default")
+                var lobiID = String(getRandomInt(0,1000))
+                var divClassName = "treeDiv"+lobiID
+                var treeLayoutdiv = d3_body.append("div").attr("class",divClassName+" panel-default")
                                                 .style("left","200px")
                                                 .style("top","200px")
                                                 .style("position", "absolute")
                 treeLayoutdiv.append("div").attr("class","panel-heading")
                     .append("div").attr("class","panel_title").append("h4").text(theName)
-                $('.treeDiv').lobiPanel({
+                $('.'+divClassName).lobiPanel({
                     reload: false,
                     editTitle: false,
                     unpin: false,
@@ -23634,7 +23646,7 @@
                     minHeight: 200,
                     maxHeight: 100000,
                 });
-                $('.treeDiv').lobiPanel('unpin');										
+                $('.'+divClassName).lobiPanel('unpin');										
 				var treeLayoutSVG = treeLayoutdiv.append("svg").attr("class","treeLayoutSVG")
 				var treeGroup = treeLayoutSVG.append("g").attr("class","treeGroup").style("position","absolute")
 								.attr("transform", "translate(50,0)");
@@ -23792,8 +23804,8 @@
 					
 					newWidth=Math.max(newWidth,getTextWidth(theName,"Arial 12pt"));					
 					//aigner: Adjust height and width of the frame
-					$('.treeDiv').lobiPanel('setWidth', newWidth + margin.top + margin.bottom +400+maxLabelLength*25+offset_tmp);
-                    $('.treeDiv').lobiPanel('setHeight', newHeight + margin.top + 2*margin.bottom+offset_tmp);
+					$('.'+divClassName).lobiPanel('setWidth', newWidth + margin.top + margin.bottom +400+maxLabelLength*25+offset_tmp);
+                    $('.'+divClassName).lobiPanel('setHeight', newHeight + margin.top + 2*margin.bottom+offset_tmp);
 					treeLayoutSVG = treeLayoutSVG.attr("height", newHeight + margin.top + margin.bottom+offset_tmp)
 					treeLayoutSVG = treeLayoutSVG.attr("width", newWidth + margin.top + margin.bottom +300+maxLabelLength*25+offset_tmp)
 					frame = frame.attr("height", newHeight + margin.top + margin.bottom)
@@ -26177,13 +26189,15 @@
 				
 				//aigner: Here the tree layout is created
 				var d3_body = d3.select("body")
-                var treeLayoutdiv = d3_body.append("div").attr("class","treeDiv panel-default")
+                var lobiID = String(getRandomInt(0,1000))
+                var divClassName = "treeDiv"+lobiID
+                var treeLayoutdiv = d3_body.append("div").attr("class",divClassName+" panel-default")
                                                 .style("left","200px")
                                                 .style("top","200px")
                                                 .style("position", "absolute")
                 treeLayoutdiv.append("div").attr("class","panel-heading")
                     .append("div").attr("class","panel_title").append("h4").text(theName)
-                $('.treeDiv').lobiPanel({
+                $('.'+divClassName).lobiPanel({
                     reload: false,
                     editTitle: false,
                     unpin: false,
@@ -26192,7 +26206,7 @@
                     minHeight: 200,
                     maxHeight: 100000,
                 });
-                $('.treeDiv').lobiPanel('unpin');
+                $('.'+divClassName).lobiPanel('unpin');
 										
 				var treeLayoutSVG = treeLayoutdiv.append("svg").attr("class","treeLayoutSVG")
 				var treeGroup = treeLayoutSVG.append("g").attr("class","treeGroup").style("position","absolute")
@@ -26351,8 +26365,8 @@
 					
                     newWidth=Math.max(newWidth,getTextWidth(theName,"Arial 12pt"));
 					//aigner: Adjust height and width of the frame
-					$('.treeDiv').lobiPanel('setWidth', newWidth + margin.top + margin.bottom +400+maxLabelLength*25+offset_tmp);
-                    $('.treeDiv').lobiPanel('setHeight', newHeight + margin.top + 2*margin.bottom+offset_tmp);
+					$('.'+divClassName).lobiPanel('setWidth', newWidth + margin.top + margin.bottom +400+maxLabelLength*25+offset_tmp);
+                    $('.'+divClassName).lobiPanel('setHeight', newHeight + margin.top + 2*margin.bottom+offset_tmp);
 					treeLayoutSVG = treeLayoutSVG.attr("height", newHeight + margin.top + margin.bottom+offset_tmp)
 					treeLayoutSVG = treeLayoutSVG.attr("width", newWidth + margin.top + margin.bottom +300+maxLabelLength*25+offset_tmp)
 					frame = frame.attr("height", newHeight + margin.top + margin.bottom)