var lib = fl.getDocumentDOM().library; //library 对象   
var libLength = lib.items.length;   
var itemArr = [];   
for(var i=0; i < libLength; i++) {   
   //将位图放入数组   
   if(lib.items[i].itemType=="bitmap")   
   itemArr.push(lib.items[i]);   
}   
for (var i = 0; i < itemArr.length; i++) {   
   var itemName = itemArr[i].name;   
   var expName = itemName.split(".")[0]; //不带后缀名   
   lib.selectItem(itemName); //选中位图   
   lib.addItemToDocument({x:0,y:0});   
   fl.getDocumentDOM().selectAll();   
   fl.getDocumentDOM().convertToSymbol("movie clip",expName,"top left") ; //将位图转化为mc元件   
   if (lib.getItemProperty('linkageImportForRS') == true) {   
        lib.setItemProperty('linkageImportForRS', false);   
   }   
   lib.setItemProperty('linkageExportForAS', true);   
   lib.setItemProperty('linkageExportForRS', false);   
   lib.setItemProperty('linkageExportInFirstFrame', true);   
   lib.setItemProperty('linkageClassName', expName);   
   lib.setItemProperty('scalingGrid',  false);   
   fl.getDocumentDOM().selectAll(); //清空舞台   
   fl.getDocumentDOM().deleteSelection();   
}