//////////////////////////////////////////////////////////////////////
// SCROLL AREA
//////////////////////////////////////////////////////////////////////
// LAS VARIABLES DEL SCRIPT
var Alto;
var Ancho;
var speed;
var Offset;
var iens6;
var ns4;
var crossobj;
var contentheight;
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
function CrearScroll(An, Al, Vel, Off){
	Ancho=An;
	Alto=Al;
	speed=Vel;
	Offset=Off;
	iens6=document.all||document.getElementById
	ns4=document.layers
	//
	if (iens6){
		document.write('<div id="container" style="position:relative;width:'+Ancho+'px;height:'+Alto+'px;overflow:hidden;border:0px ridge white">')
		document.write('<div id="content" style="position:absolute;width:'+Ancho+'px;left:0px;top:0px">')
	}
	document.write('<ilayer name="nscontainer" width='+Ancho+' height='+Alto+' clip="0,0,'+Ancho+','+Alto+'">')
	document.write('<layer name="nscontent" width='+Ancho+' height='+Alto+' visibility=hidden>')
}
function CerrarScroll(){
	document.write('</layer>')
	document.write('</ilayer>')
	if (iens6){
		document.write('</div></div>')
		crossobj=document.getElementById? document.getElementById("content") : document.all.content
		contentheight=crossobj.offsetHeight
	}
	else if (ns4){
		crossobj=document.nscontainer.document.nscontent
		contentheight=crossobj.clip.height
	}
	window.onload=getcontent_height
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
function movedown(){
	if (window.moveupvar) clearTimeout(moveupvar)
		if (iens6&&parseInt(crossobj.style.top)>=(contentheight*(-1)+Alto-Offset))
			crossobj.style.top=parseInt(crossobj.style.top)-speed+"px"
		else if (ns4&&crossobj.top>=(contentheight*(-1)+Alto-Offset))
			crossobj.top-=speed
			movedownvar=setTimeout("movedown()",20)
}
function moveup(){
	if (window.movedownvar) clearTimeout(movedownvar)
		if (iens6&&parseInt(crossobj.style.top)<=0)
			crossobj.style.top=parseInt(crossobj.style.top)+speed+"px"
		else if (ns4&&crossobj.top<=0)
			crossobj.top+=speed
			moveupvar=setTimeout("moveup()",20)
}
function stopscroll(){
	if (window.moveupvar) clearTimeout(moveupvar)
		if (window.movedownvar) clearTimeout(movedownvar)
}
function resetscroll(){
	stopscroll()
	if (iens6)
		crossobj.style.top=0+"px"
	else if (ns4)
	crossobj.top=0
}
function getcontent_height(){
	if (iens6)
		contentheight=crossobj.offsetHeight
	else if (ns4)
	document.nscontainer.document.nscontent.visibility="show"
}