var navegador = navigator.appName;
  		var speed=5
			
			function F_MoveDown(sObject){
				if (navegador=="Netscape"){
					speed=17;	
				}
				else {
				speed=5
				}
					var crossobj=document.getElementById? document.getElementById(sObject) : eval('document.all.'+ sObject)
					var contentheight=crossobj.offsetHeight
					if (window.moveupvar) clearTimeout(moveupvar)
					if (parseInt(crossobj.style.top)>=(contentheight*(-1)+100))
					crossobj.style.top=parseInt(crossobj.style.top)-speed+"px"
					movedownvar=setTimeout("F_MoveDown('"+ sObject +"')",20)
			}
			
			function F_MoveLeft(sObject){
				var crossobj=document.getElementById? document.getElementById(sObject) : eval('document.all.'+ sObject)
				var contentheight=crossobj.offsetWidth
				if (window.moveupvar) clearTimeout(moveupvar)
				if (parseInt(crossobj.style.left)>=(contentheight*(-1)+100))
				crossobj.style.left=parseInt(crossobj.style.left)-speed+"px"
				movedownvar=setTimeout("F_MoveLeft('"+ sObject +"')",20)
			}
			
			function F_MoveRight(sObject){
				var crossobj=document.getElementById? document.getElementById(sObject) : eval('document.all.'+ sObject)
				var contentheight=crossobj.offsetWidth
				if (window.moveupvar) clearTimeout(moveupvar)
				if (parseInt(crossobj.style.left)<=0)
				crossobj.style.left=parseInt(crossobj.style.left)+speed+"px"
				moveupvar=setTimeout("F_MoveRight('"+ sObject +"')",20)
			}
			
			function F_MoveUp(sObject){
				var crossobj=document.getElementById? document.getElementById(sObject) : eval('document.all.'+ sObject)
				var contentheight=crossobj.offsetHeight
				if (window.movedownvar) clearTimeout(movedownvar)
				if (parseInt(crossobj.style.top)<=0)
				crossobj.style.top=parseInt(crossobj.style.top)+speed+"px"
				moveupvar=setTimeout("F_MoveUp('"+ sObject +"')",20)
			}
			
			function F_StopScroll(){
				if (window.moveupvar) clearTimeout(moveupvar)
				if (window.movedownvar) clearTimeout(movedownvar)
			}
			
			function movetop(){
				F_StopScroll()
				crossobj.style.top=0+"px"
			}
			
			/*function getcontent_height(){
				contentheight=crossobj.offsetHeight
			}
			window.onload=getcontent_height*/