//animate

			function getstyle(obj,name){

				if(obj.currentStyle){

					return obj.currentStyle[name];

				}else{

					return getComputedStyle(obj,false)[name];

				}

			}

			function startrun(obj,attr,target,fn){

				 clearInterval(obj.timer);

				 obj.timer = setInterval(function(){

				  var cur = 0;

				  if(attr == "opacity"){

				   cur = Math.round(parseFloat(getstyle(obj,attr))*100);

				  }else{

				   cur = parseInt(getstyle(obj,attr));

				  }

				  var speed = (target-cur)/8;

				  speed = speed>0?Math.ceil(speed):Math.floor(speed);

				  if(cur == target){

				   clearInterval(obj.timer);

				   if(fn){

				    fn();

				   }

				  }else{

				   if(attr == "opacity"){

				    obj.style.filter = "alpha(opacity="+(cur+speed)+")";

				    obj.style.opacity = (cur+speed)/100;

				   }else{

					obj.style[attr] = cur + speed + "px";

				   }

				  }

				 },30)

				}