diff --git a/htdocs/lib/functions.lib.php b/htdocs/lib/functions.lib.php
index 64eb2c033f0..b8907b45c50 100644
--- a/htdocs/lib/functions.lib.php
+++ b/htdocs/lib/functions.lib.php
@@ -1238,8 +1238,9 @@ function dolibarr_trunc($string,$size=40,$trunc='right',$stringencoding='')
  *  @param      showlegend      Show legend
  *  @param      type            Type of graph ('pie', 'barline')
  *  @param      showpercent     Show percent (with type='pie' only)
+ *  @param      url             Param to add an url to click values
  */
-function dol_print_graph($htmlid,$width,$height,$data,$showlegend=0,$type='pie',$showpercent=0)
+function dol_print_graph($htmlid,$width,$height,$data,$showlegend=0,$type='pie',$showpercent=0,$url='')
 {
     global $conf,$langs;
     global $theme_datacolor;    // To have var kept when function is called several times
@@ -1301,9 +1302,14 @@ function dol_print_graph($htmlid,$width,$height,$data,$showlegend=0,$type='pie',
                                 formatter: function(label, series) {
                                     var percent=Math.round(series.percent);
                                     var number=series.data[0][1];
-                                    return \'<div style="font-size:8pt;text-align:center;padding:2px;color:white;">\'+'.($showlegend?'number':'label+\'<br/>\'+number');
+                                    return \'';
+                            print '<div style="font-size:8pt;text-align:center;padding:2px;color:white;">';
+                            if ($url) print '<a style="color: #FFFFFF;" border="0" href="'.$url.'=">';
+                            print '\'+'.($showlegend?'number':'label+\'<br/>\'+number');
                             if (! empty($showpercent)) print '+\'<br/>\'+percent+\'%\'';
-                            print '+\'</div>\';
+                            print '+\'';
+                            if ($url) print '</a>';
+                            print '</div>\';
                                 },
                                 background: {
                                     opacity: 0.5,