--- a/heuristics/viewHeuristicsColormap.php
+++ b/heuristics/viewHeuristicsColormap.php
@@ -1,1 +1,54 @@
+<?php    
+  include_once("../lib/common.inc.php");
+// http://www.herethere.net/~samson/php/color_gradient/color_gradient_generator.php.txt
+// return the interpolated value between pBegin and pEnd
+function interpolate($pBegin, $pEnd, $pStep, $pMax)
+{
+	if ($pBegin < $pEnd) {
+		return (($pEnd - $pBegin) * ($pStep / $pMax)) + $pBegin;
+	}
+	else {
+		return (($pBegin - $pEnd) * (1 - ($pStep / $pMax))) + $pEnd;
+	}
+}
+function Gradient($HexFrom, $HexTo, $ColorSteps)
+{
+	$theColorBegin = hexdec($HexFrom);
+	$theColorEnd = hexdec($HexTo);
+	$theNumSteps = intval($ColorSteps);
+	$theR0 = ($theColorBegin & 0xff0000) >> 16;
+	$theG0 = ($theColorBegin & 0x00ff00) >> 8;
+	$theB0 = ($theColorBegin & 0x0000ff) >> 0;
+	$theR1 = ($theColorEnd & 0xff0000) >> 16;
+	$theG1 = ($theColorEnd & 0x00ff00) >> 8;
+	$theB1 = ($theColorEnd & 0x0000ff) >> 0;
+	$GradientColors = array();
+	// generate gradient swathe now
+	for ($i = 0; $i <= $theNumSteps; $i++) {
+		$theR = interpolate($theR0, $theR1, $i, $theNumSteps);
+		$theG = interpolate($theG0, $theG1, $i, $theNumSteps);
+		$theB = interpolate($theB0, $theB1, $i, $theNumSteps);
+		$theVal = ((($theR << 8) | $theG) << 8) | $theB;
+		$GradientColors[] = sprintf("%06X", $theVal);
+	}
+	return $GradientColors;
+}
+$Gradients = Gradient("66FF00" , "FF0000" , 10); 
+  
+$query = "select max(sum) from (SELECT sum(heuristic_value) 
+as sum FROM heuristic_results group by CNID) as a";
+$result = mysql_query($query);
+$r = mysql_fetch_array($result, MYSQL_BOTH);
+$maxVal = $r[0];
+  
+$query = "SELECT sum(heuristic_value) as sum, CNID
+FROM `heuristic_results` group by CNID order by sum DESC LIMIT 30";
+$result = mysql_query($query);
+if (!$result) echo mysql_error().$query;
+while ($r = mysql_fetch_array($result, MYSQL_BOTH)) {
+    echo '<span style="background: #'.$Gradients[floor(($r['sum']/$maxVal) * 10)].'; padding: 5px;">';
+    echo '<a title="'.$r['sum'].'" href="../displayContract.php?CNID='.$r['CNID'].'">X</a>';
+    echo "</span>";
+}
 
+?>