var Sld1_Len = Sld2_Len = 900;
     var Sld_1 = 0;
     var Sld_2 = Sld_1 + Sld1_Len;
     var g;
     var Sld_Timer;
	 
     function scrollSlides(df)
     {
         g = df;
         if(g)
	     {
              --Sld_1;
              --Sld_2;
              if (Sld_1 < -Sld1_Len)
                  Sld_1 = Sld_2+Sld2_Len;
              if (Sld_2 < -Sld2_Len)
                  Sld_2 = Sld_1+Sld1_Len;
              document.getElementById("sld1").style.left = Sld_1+"px";
              document.getElementById("sld2").style.left = Sld_2+"px";
              Sld_Timer = setTimeout("scrollSlides(g)",100);
	      }
          else
		  {
		      clearTimeout(Sld_Timer); 
          }
	 }