narrow window conf

config.js

@@ -1,5 +1,6 @@
 config.source="example_links.txt";
 config.columns=3;
+config.narrow=500; // less than N pixels window results in single column
 config.title="MDLinks";
 config.favicon=null; // link to favicon
 config.css=null;  // link to style file

index.html

@@ -57,6 +57,9 @@ function init() {
     hitList=search_hits(document.getElementById("filter").value);
     print_results(hitList);
 }
+function narrow_window() {
+    return window.innerWidth < config.narrow;
+}
 String.prototype.capitalizeFirstLetter = function() {
     return this.charAt(0).toUpperCase() + this.slice(1);
 }
@@ -134,7 +137,7 @@ function print_results(hitList) {
     var cat=0;
     for (c=0; c<linkList.length; c++) {
         if ( linkList[c].substring(0,2) == "# " ) {
-          if (cat%config.columns==0) { tbody.innerHTML+="<tr>"; }
+          if (cat%config.columns==0 || narrow_window()) { tbody.innerHTML+="<tr>"; }
           var td=document.createElement("td");
           td.innerHTML+=make_head(linkList[c]);
           tbody.appendChild(td);
@@ -206,7 +209,8 @@ var config = {
   search:true,  // include search bar
   columns:4,    // number of columns for link table
   style:null,  //  file to load css from
-  favicon:null  //  link to favicon file
+  favicon:null,  //  link to favicon file
+  narrow:600     // pixel width that is narrow screen = single column table
 };
 
 </script>