function startSearch(){

   var map= top.mappa.document.mapApplet.getMap();

   if(map==null) return false;
   
    
   var layer = map.getLayer (top.ricerca.document.sform.srch1.value+top.ricerca.document.sform.srch2.value);


   if(layer==null) return false;

   var sQuery1 = top.ricerca.document.sform.srch3.value;
   var sQuery2 = top.ricerca.document.sform.srch2.value;
   var sQuery3 = top.ricerca.document.sform.srch1.value;
  
   if(sQuery1!=""){
       sQuery = "(OBJ_ID LIKE '%"+sQuery1+"%')";

   } 

   if(sQuery==""){
       return false;
   }

   map.searchAttribute(layer.id, sQuery, 4);
}