var OffLeft,OffTop,BodyHeight,BodyWidth,interval,direction;
        $(document).ready(function(){
			var bg=$("#img").width();
var ng=$("#img").height();
            direction=1;
            OffLeft=document.documentElement.scrollTop;
			 OffTop=document.documentElement.scrollLeft;
            BodyHeight=parseInt(document.documentElement.clientHeight-ng);
            BodyWidth=parseInt(document.documentElement.clientWidth-bg);
            interval=setInterval("Flow()",10);
        });
        function Flow(){
            if(direction==1){
                OffLeft--;
                OffTop--;
                if(OffTop>0){
                    $("#img").css("top",OffTop);
                    $("#img").css("left",OffLeft);
				}
                else{
                    direction=2;
                }            
            }
            else if(direction==2){
                OffLeft--;
                OffTop++;
                if(OffLeft>0){
                    $("#img").css("top",OffTop);
                    $("#img").css("left",OffLeft);
				 }
                else{
                    direction=3;
                }            
            }
            else if(direction==3){
                OffLeft++;
                OffTop++;
                if(OffTop<BodyHeight){
                    $("#img").css("top",OffTop);
                    $("#img").css("left",OffLeft);
				 }
                else{
                    direction=4;
                }            
            }
            
            else if(direction==4){
                OffLeft++;
                OffTop--;
                if(OffLeft<BodyWidth){
                    $("#img").css("top",OffTop);
                    $("#img").css("left",OffLeft);
				 }
                else{
                    direction=1;
                }            
            }
        }
        var AutoFlag=0;
        function SetAuto(){
            if(AutoFlag==0){
                clearInterval(interval);
                AutoFlag=1;
            }
            else{
                interval=setInterval("Flow()",30);
                AutoFlag=0;
            }
        }