diff --git a/layout/html/tests/table/bugs/bug11321.html b/layout/html/tests/table/bugs/bug11321.html
index 83baeb4d6cb9..2808123c220f 100644
--- a/layout/html/tests/table/bugs/bug11321.html
+++ b/layout/html/tests/table/bugs/bug11321.html
@@ -3,12 +3,12 @@
 <SCRIPT>
 <!--
 function run(){
-        tbl = document.body.appendChild(document.createElement("TABLE"));
+        var tbl = document.body.appendChild(document.createElement("TABLE"));
                 //alert("Appending TR to TABLE");
-        tr = tbl.appendChild(document.createElement("TR"));
-        tmp_td = document.createElement("TD")
-        td1 = tr.appendChild(tmp_td);   // <-- Causes Crash
-        td1_text = td1.appendChild(document.createTextNode("testing"));
+        var tr = tbl.appendChild(document.createElement("TR"));
+        var tmp_td = document.createElement("TD")
+        var td1 = tr.appendChild(tmp_td);   // <-- Causes Crash
+        var td1_text = td1.appendChild(document.createTextNode("testing"));
 }
 //-->
 </SCRIPT>
diff --git a/layout/html/tests/table/bugs/bug18359.html b/layout/html/tests/table/bugs/bug18359.html
index fc3167a9098c..8b338fa297d6 100644
--- a/layout/html/tests/table/bugs/bug18359.html
+++ b/layout/html/tests/table/bugs/bug18359.html
@@ -18,6 +18,7 @@ function triggerURL(url)
         {
                 InstallTrigger.StartSoftwareUpdate(url);
         }
+	return true;
 }
 
 function runAll()
diff --git a/layout/html/tests/table/bugs/bug25086.html b/layout/html/tests/table/bugs/bug25086.html
index 5976304b3330..5302bd626044 100644
--- a/layout/html/tests/table/bugs/bug25086.html
+++ b/layout/html/tests/table/bugs/bug25086.html
@@ -36,9 +36,9 @@
 <script type="text/javascript">
 
 
-        table = document.getElementById('test2');
-        row = table.insertRow(0);
-        cell = row.insertCell(0);
+        var table = document.getElementById('test2');
+        var row = table.insertRow(0);
+        var cell = row.insertCell(0);
         cell.setAttribute('class', 'someClass');
         cell.appendChild(document.createTextNode('padding?'));
 
diff --git a/layout/html/tests/table/bugs/bug30418.html b/layout/html/tests/table/bugs/bug30418.html
index 96cd60b6fd47..31308ac0ef79 100644
--- a/layout/html/tests/table/bugs/bug30418.html
+++ b/layout/html/tests/table/bugs/bug30418.html
@@ -13,7 +13,7 @@ function createTable()
         // THead creation block
         var oTHead = oTable.createTHead();
         var oRow = oTHead.insertRow(0); 
-        for(col=0;col<8;col++)
+        for( var col=0;col<8;col++)
         {
                 var oCell = oRow.insertCell(col);
                 var cellValue = document.createTextNode("h" + col);
@@ -23,20 +23,20 @@ function createTable()
         
         // TFoot creation block
         var oTFoot = oTable.createTFoot();
-        var oRow = oTFoot.insertRow(0); // create table footer row
+        oRow = oTFoot.insertRow(0); // create table footer row
         for(col=0;col<8;col++)
         {
-                var oCell = oRow.insertCell(col);
-                var cellValue = document.createTextNode("f" + col);
+                 oCell = oRow.insertCell(col);
+                 cellValue = document.createTextNode("f" + col);
                 oCell.appendChild(cellValue);
         } 
         
-        for(row=0;row<1;row++) // ask for just 1 row
+        for(var row=0;row<1;row++) // ask for just 1 row
         {
-                var oRow = oTable.tBodies[0].insertRow(row);
+               oRow = oTable.tBodies[0].insertRow(row);
                 for(col=0;col<8;col++)
                 {
-                        var oCell = oRow.insertCell(col);                       
+                         oCell = oRow.insertCell(col);                       
                         var newValue2 = document.createTextNode("r" + row + "c" 
 + col);
                         oCell.appendChild(newValue2);
diff --git a/layout/html/tests/table/bugs/bug3517.html b/layout/html/tests/table/bugs/bug3517.html
index 7ff7885d43cc..e9825cb8746d 100644
--- a/layout/html/tests/table/bugs/bug3517.html
+++ b/layout/html/tests/table/bugs/bug3517.html
@@ -20,7 +20,7 @@ tr {
 
 
 
-mytable = document.getElementById("mytable");
+var mytable = document.getElementById("mytable");
 
 dump("before\n");
 var newrow = mytable.insertRow(0);
diff --git a/layout/html/tests/table/bugs/bug51727.html b/layout/html/tests/table/bugs/bug51727.html
index bba2f011af3a..761d0de37885 100644
--- a/layout/html/tests/table/bugs/bug51727.html
+++ b/layout/html/tests/table/bugs/bug51727.html
@@ -22,7 +22,7 @@ function windowLoad()
                 var newRow = newTable.insertRow(y);
 
                                 
-                for(x=0;x<1;x++)
+                for( var x=0;x<1;x++)
 
                 {
                         var newCell = newRow.insertCell(x);
diff --git a/layout/html/tests/table/bugs/bug9024.html b/layout/html/tests/table/bugs/bug9024.html
index 4ce27c713c1f..072a95a35dad 100644
--- a/layout/html/tests/table/bugs/bug9024.html
+++ b/layout/html/tests/table/bugs/bug9024.html
@@ -13,7 +13,7 @@ table { border-collapse: collapse; }
 <script type="text/javascript">
 
 
-mytable = document.getElementById("mytable");
+var mytable = document.getElementById("mytable");
 
 dump("before\n");
 var newrow = mytable.insertRow(0);