var flag=false;
function drawimage_ny(imgd){

   var image=new image();
   image.src=imgd.src;
   if(image.width>0 && image.height>0){
    flag=true;

      if(image.width>740){
        imgd.width=740;
        imgd.height=math.round(740/(image.width/image.height));
      }
	  else{
        imgd.width=image.width;
        imgd.height=image.height;
      }
	  
   }
}