[JavaScript][MEDIO] Script '' Texto muy rápido ''

<span id="webaddress" style="position:relative; visibility:hidden; font-style:italic;">TU TEXTO!!</span>

<script language="JavaScript1.2">
<!--
if (document.all){
  webaddress.style.left=document.body.clientWidth
  webaddress.style.visibility="visible"
  }

function moveit(){
  if (webaddress.style.pixelLeft>15)
    webaddress.style.pixelLeft-=15
  else{
    webaddress.style.fontStyle="normal"
    webaddress.style.left=0
    clearInterval(moving)
    }
  }

if (document.all)
  moving=setInterval("moveit()",40)

//-->
</script>