ie=document.all?1:0
n=document.layers?1:0

timSpeed=50
contHeight=80


function makeScrollObj(obj,nest){
        nest=(!nest) ? '':'document.'+nest+'.'                                                                          
        this.css=(n) ? eval(nest+'document.'+obj):eval('document.all.'+obj+'.style')                                                    
        this.scrollHeight=n?this.css.document.height:eval('document.all.'+obj+'.offsetHeight')                                                  
        this.top=b_gettop                                                                               
        return this
}
function b_gettop(){
        var gleft=(n) ? eval(this.css.top):eval(this.css.pixelTop);
        return gleft;
}

var scrollTim;
var active=0;
function scroll(speed){
       clearTimeout(scrollTim)
        way=speed>0?1:0
        if((!way && oScroll[active].top()>-oScroll[active].scrollHeight+contHeight) || (oScroll[active].top()<0 && way)){
                oScroll[active].css.top=oScroll[active].top()+speed
                scrollTim=setTimeout("scroll("+speed+")",timSpeed)
        }
}
function noScroll(){
        clearTimeout(scrollTim)
}

function changeActive(num){
	oScroll[active].css.visibility='hidden'
	active=num
	oScroll[active].css.top=0
	oScroll[active].css.visibility='visible'
}
function scrollInit(){
        oScroll=new Array()
        oScroll[0]=new  makeScrollObj('divScroll1','divCont')
        oScroll[0].css.visibility='visible'
}
onload=scrollInit;