function voter(str,sid) {
 var posCode = '';
 var minWidth=300;
 var minHeight=190;
 if (document.all || document.layers || document.createTextNode) {
  posX = Math.round((screen.width - minWidth) / 2);
  posY = Math.round((screen.height - minHeight) / 2);
  posCode = (document.all)? 'left='+posX+',top='+posY : 'screenX='+posX+',screenY='+posY;
 }
 cardWindow = window.open('voting.'+str+'.'+sid,'','menubar=no,toolbar=no,scrollbars=no,status=no,width='+minWidth+',height='+minHeight+','+posCode);
}