function popupper(url,x,y,name,sb,rs,st,lt,tb) {
 var win = null;
 var centerwidth=(screen.width/2)-(x/2);
 var centerheight=(screen.height/2)-(y/2);
 var scrollbarstext = 'scrollbars = no,';
 var resizabletext = 'resizable = no,';
 var statustext = 'status = no,';
 var locationtext = 'location = no,';
 var toolbartext = 'toolbar = no,';
 var features = '';
 if (sb == 1){
  scrollbarstext = 'scrollbars = yes,'
 }
 if (rs == 1){
  resizabletext = 'resizable = yes,'
 }
 if (st == 1){
  statustext = 'status = yes,'
 }
 if (lt == 1){
  locationtext = 'location = yes,'
 }
 if (tb == 1){
  toolbartext = 'toolbar = yes,'
 }
 features = scrollbarstext+resizabletext+statustext;
 features = features + locationtext+toolbartext;
 features = features + 'width = '+x+',height = '+y;
 features = features + ',top = ' + centerheight;
 features = features + ',left = ' + centerwidth;
 if (url.substring(0,31)=="http://www.bookingevolution.com"){
  win = window.open(pageTracker._getLinkerUrl(url), name, features); 
 }
 else{
  win = window.open(url, name, features);
 }
 win.focus()
}
 

function open_target(form, features, window_name) {
     if (!window_name){
          window_name = 'bookingevolution_' + (new Date().getTime());
     }
     form.target = window_name;
     open ('', window_name, features);
}