+$visibletags->columns();
+$tag_columns = $visibletags->headers();
+
+//columns that are not defined as extra myslice tags
+$extra_columns = array();
+//MyPLC columns
+$extra_columns[]=array('tagname'=>'sitename', 'header'=>'SN', 'type'=>'string', 'title'=>'Site name', 'fetched'=>true, 'source'=>'myplc');
+$extra_columns[]=array('tagname'=>'domain', 'header'=>'DN', 'type'=>'string', 'title'=>'Toplevel domain name', 'fetched'=>true, 'source'=>'myplc');
+$extra_columns[]=array('tagname'=>'ipaddress', 'header'=>'IP', 'type'=>'string', 'title'=>'IP Address', 'fetched'=>true, 'source'=>'myplc');
+$extra_columns[]=array('tagname'=>'fcdistro', 'header'=>'OS', 'type'=>'string', 'title'=>'Operating system', 'fetched'=>false, 'source'=>'myplc');
+$extra_columns[]=array('tagname'=>'date_created', 'header'=>'DA', 'source'=>'myplc', 'type'=>'date', 'title'=>'Date added', 'fetched'=>false);
+$extra_columns[]=array('tagname'=>'arch', 'header'=>'A', 'source'=>'myplc', 'type'=>'string', 'title'=>'Architecture', 'fetched'=>false);
+if (plc_is_admin()) {
+$extra_columns[]=array('tagname'=>'deployment', 'header'=>'DL', 'source'=>'myplc', 'type'=>'string', 'title'=>'Deployment', 'fetched'=>false);
+}
+
+//CoMon Live data
+$extra_columns[]=array('tagname'=>'bwlimit', 'header'=>'BW', 'source'=>'comon', 'type'=>'sortAlphaNumericTop', 'title'=>'Bandwidth limit', 'fetched'=>false);
+$extra_columns[]=array('tagname'=>'numcores', 'header'=>'CC', 'source'=>'comon', 'type'=>'sortAlphaNumericTop', 'title'=>'Number of CPU Cores', 'fetched'=>false);
+$extra_columns[]=array('tagname'=>'cpuspeed', 'header'=>'CR', 'source'=>'comon', 'type'=>'sortAlphaNumericTop', 'title'=>'CPU clock rate', 'fetched'=>false);
+$extra_columns[]=array('tagname'=>'disksize', 'header'=>'DS', 'source'=>'comon', 'type'=>'sortAlphaNumericTop', 'title'=>'Disk size', 'fetched'=>false);
+$extra_columns[]=array('tagname'=>'gbfree', 'header'=>'DF', 'source'=>'comon', 'type'=>'sortAlphaNumericTop', 'title'=>'Currently available disk space', 'fetched'=>false);
+$extra_columns[]=array('tagname'=>'memsize', 'header'=>'MS', 'source'=>'comon', 'type'=>'sortAlphaNumericTop', 'title'=>'Memory size', 'fetched'=>false);
+$extra_columns[]=array('tagname'=>'numslices', 'header'=>'SM', 'source'=>'comon', 'type'=>'sortAlphaNumericTop', 'title'=>'Number of slices in memory', 'fetched'=>false);
+$extra_columns[]=array('tagname'=>'uptime', 'header'=>'UT', 'source'=>'comon', 'type'=>'sortAlphaNumericTop', 'title'=>'Continuous uptime until now', 'fetched'=>false);
+
+//TopHat Live data
+$extra_columns[]=array('tagname'=>'asn', 'header'=>'AS', 'source'=>'tophat', 'type'=>'string', 'title'=>'AS Number', 'fetched'=>false);
+$extra_columns[]=array('tagname'=>'city', 'header'=>'LCY', 'source'=>'tophat', 'type'=>'string', 'title'=>'City', 'fetched'=>false);
+$extra_columns[]=array('tagname'=>'region', 'header'=>'LRN', 'source'=>'tophat', 'type'=>'string', 'title'=>'Region', 'fetched'=>false);
+$extra_columns[]=array('tagname'=>'country', 'header'=>'LCN', 'source'=>'tophat', 'type'=>'string', 'title'=>'Country', 'fetched'=>false);
+$extra_columns[]=array('tagname'=>'continent', 'header'=>'LCT', 'source'=>'tophat', 'type'=>'string', 'title'=>'Continent', 'fetched'=>false);
+//$extra_columns[]=array('tagname'=>'hopcount', 'header'=>'HC', 'source'=>'tophat', 'type'=>'sortAlphaNumericTop', 'title'=>'Hop count from reference node', 'fetched'=>false);
+//$extra_columns[]=array('tagname'=>'rtt', 'header'=>'RTT', 'source'=>'tophat', 'type'=>'sortAlphaNumericTop', 'title'=>'Round trip time from reference node', 'fetched'=>false);
+////$extra_columns[]=array('tagname'=>'agents', 'header'=>'MA', 'source'=>'tophat', 'type'=>'sortAlphaNumericTop', 'title'=>'Co-located measurement agents', 'fetched'=>true);
+////$extra_columns[]=array('tagname'=>'agents_sonoma', 'header'=>'MAS', 'source'=>'tophat', 'type'=>'sortAlphaNumericTop', 'title'=>'Co-located SONoMA agents', 'fetched'=>true);
+////$extra_columns[]=array('tagname'=>'agents_etomic', 'header'=>'MAE', 'source'=>'tophat', 'type'=>'sortAlphaNumericTop', 'title'=>'Co-located ETOMIC agents', 'fetched'=>true);
+////$extra_columns[]=array('tagname'=>'agents_tdmi', 'header'=>'MAT', 'source'=>'tophat', 'type'=>'sortAlphaNumericTop', 'title'=>'Co-located TDMI agents', 'fetched'=>true);
+////$extra_columns[]=array('tagname'=>'agents_dimes', 'header'=>'MAD', 'source'=>'tophat', 'type'=>'sortAlphaNumericTop', 'title'=>'Co-located DIMES agents', 'fetched'=>true);
+//
+//
+
+//Get user's column configuration
+
+$first_time_configuration = false;
+$default_configuration = "hostname:f|ST:f|AU:f|RES:f";
+//$extra_default = "";
+$column_configuration = "";
+$slice_column_configuration = "";
+
+$show_configuration = "";
+$show_reservable_message = '1';
+$show_columns_message = '1';
+
+$PersonTags=$api->GetPersonTags (array('person_id'=>$plc->person['person_id']));
+//plc_debug('ptags',$PersonTags);
+foreach ($PersonTags as $ptag) {
+ if ($ptag['tagname'] == 'columnconf') {
+ $column_configuration = $ptag['value'];
+ $conf_tag_id = $ptag['person_tag_id'];
+ } else if ($ptag['tagname'] == 'showconf') {
+ $show_configuration = $ptag['value'];
+ $show_tag_id = $ptag['person_tag_id'];
+ }
+}
+
+$sliceconf_exists = false;
+if ($column_configuration == "") {
+ $first_time_configuration = true;
+ $column_configuration = $slice_id.";default";
+ $sliceconf_exists = true;
+} else {
+ $slice_conf = explode(";",$column_configuration);
+ for ($i=0; $i<count($slice_conf); $i++ ) {
+ if ($slice_conf[$i] == $slice_id) {
+ $i++;
+ $slice_column_configuration = $slice_conf[$i];
+ $sliceconf_exists = true;
+ break;
+ } else {
+ $i++;
+ $slice_column_configuration = $slice_conf[$i];
+ }
+ }
+}
+
+if ($sliceconf_exists == false)
+ $column_configuration = $column_configuration.";".$slice_id.";default";
+
+if ($slice_column_configuration == "")
+ $full_configuration = $default_configuration;
+else
+ $full_configuration = $default_configuration."|".$slice_column_configuration;
+
+
+//instantiate the column configuration class, which prepares the headers array
+$ConfigureColumns =new PlekitColumns($full_configuration, $fix_columns, $tag_columns, $extra_columns);
+
+$visiblecolumns = $ConfigureColumns->node_tags();
+