canvasDiv.className += " sel";
  }else if( selRow==p ){
    selRow = null;
    this.className = this.className.replace(" sel", "");
    canvasDiv.className = canvasDiv.className.replace(" sel", "");
  }else{
    if( tx.fileDiff ){
      location.href=tx.baseUrl + "/fdiff?v1="+selRow.h+"&v2="+p.h+"&sbs=1";
      location.href=tx.baseUrl + "/fdiff?v1="+selRow.h+"&v2="+p.h
    }else{
/*
**      if( db_get_boolean("show-version-diffs", 0)==0 ){
**        @     location.href="%R/vdiff?from="+selRow.h+"&to="+p.h+"&sbs=0";
**      }else{
**        @     location.href="%R/vdiff?from="+selRow.h+"&to="+p.h+"&sbs=1";
**      }
*/
      location.href=tx.baseUrl+"/vdiff?from="+selRow.h+"&to="+p.h
      location.href=tx.baseUrl + "/vdiff?from="+selRow.h+"&to="+p.h
    }
  }
}
function changeDisplay(selector,value){
  var x = document.getElementsByClassName(selector);
  var n = x.length;
  for(var i=0; i<n; i++) {x[i].style.display = value;}