if (iens6)
            {var crossobj=document.getElementById? document.getElementById("content") : document.all.content
             var contentheight=crossobj.offsetHeight}
          else if (ns4)
            {var crossobj=document.nscontainer.document.nscontent
             var contentheight=crossobj.clip.height}

          function swap1()
            {document.up.src="upover.gif"}

          function unswap1()
            {document.up.src="up.gif"}

          function swap2()
            {document.down.src="downover.gif"}

          function unswap2()
            {document.down.src="down.gif"}

          function movedown()
            {if (iens6&&parseInt(crossobj.style.top)>=(contentheight*(-.6)))
               crossobj.style.top=parseInt(crossobj.style.top)-speed
             else if (ns4&&crossobj.top>=(contentheight*(-1)+100))
                    crossobj.top-=speed
             movedownvar=setTimeout("movedown()",20)}

          function moveup()
            {if (iens6&&parseInt(crossobj.style.top)<=0)
               crossobj.style.top=parseInt(crossobj.style.top)+speed
             else if (ns4&&crossobj.top<=0)
                    crossobj.top+=speed
             moveupvar=setTimeout("moveup()",20)}

          function totop()
            {if (iens6&&parseInt(crossobj.style.top)<=0)
               crossobj.style.top=0
             else if (ns4&&crossobj.top<=0)
                    crossobj.top=0}

          function tobottom()
            {if (iens6&&parseInt(crossobj.style.top)>=(contentheight*(-.6)))
               crossobj.style.top=(contentheight*(-.6))
             else if (ns4&&crossobj.top>=(contentheight*(-1)+100))
                    crossobj.top=(contentheight*(-.6))}

          function getcontent_height()
            {if (iens6) contentheight=crossobj.offsetHeight
             else if (ns4) document.nscontainer.document.nscontent.visibility="show"}