Continue loop when Photoshop ==BUSY

#target bridge
app.document.deselectAll();
var thumbs = app.document.getSelection("*");
for(var a in thumbs){
var f =thumbs.name.slice(0,10);
var poo=f.indexOf ("BW");
if(f.indexOf ("BW")!=-1){
    var poop=app.document.select(app.document.thumbnail.children) ;
    var isBW=app.document.selections[0].core.quickMetadata.colorMode;
    if(isBW!=1){
         poop=BridgeTalk.getStatus ( "photoshop-60.032");
         bDubAction:
         while(poop=="IDLE"){
        var thumb = app.document.selections[0];
         thumb.open();
           runAction();
           break bDubAction;
           }
        }
    }
}
function runAction(){
    var bt = new BridgeTalk;
    bt.target = "photoshop-60.032";
var crud="try{doAction('2012 eDesign BW','eDesign' );}catch(e){}";
 bt.body =crud;
 bt.send();}

If photoshop is IDLE this works fine. But if its busy it just skips ahead. I need it to say hey if its busy lets wait here until its Idle before I move on to the next thing. I can not seem to get my head around this.