var speed = 1;
      var position_ini = 0;
      var alt = 1;
      var pos_ini1 = 0, pos_ini2 = -1;
      //document.write('1');
	  var dir=1;
	  var stp;
      function defil()
      {
      	if (stp==1) return;
        if (document.all){
			 //temp = document.body.scrollTop;
			 temp = document.body.scrollLeft;
			 //temp1= document.body.scrollRight;
        }
        else{
			 //temp = window.pageYOffset;
			 temp = window.pageXOffset;
        }
        if (alt == 0){
			 alt = 1;
        }
        else{
			alt = 0;
        }
        if (alt == 0){
		   pos_ini1 = temp;
        }
        else{
		  pos_ini2 = temp;
        }
        if (pos_ini1 != pos_ini2)
			{
			if (dir==1)
				{
				if (document.all){
					  //position_ini = document.body.scrollTop + speed;
					  position_ini = document.body.scrollLeft + speed;
					  
					}
					else{
					  //position_ini = window.pageYOffset + speed;
					  position_ini = window.pageXOffset + speed;
					}
				}
			else
				{
				if (document.all){
					  position_ini = document.body.scrollLeft - speed;
					  
					}
					else{
					  position_ini = window.pageXOffset - speed;
					}
				}
				window.scroll(position_ini, 0);
				//scrollTo(xpos,ypos)
			}
        else
			{	
			dir=1-dir;
			pos_ini2-=1;
			}
        return true;
      }

      function init()
      {
		setInterval("defil()", 50);
        return true;
      }
window.onload = init;