function AutoSize(obj,max_width,max_height) {
						if (obj.width > max_width || obj.height> max_height)
						{
						    if (obj.width/obj.height> max_width/max_height) 
						        {
							        obj.resized=true;
							        obj.height=obj.height*max_width/obj.width;
							        obj.width=max_width;
						        }
							else
						        {
							        obj.resized=true;
							        obj.height=obj.width*max_height/obj.height;
							        obj.width=max_height;
						        }							
						}
					}