Tiny accordation problem ie

Question

Hi friends, i have a problem whit tiny accordation whit ie, here my code:

var TINY={};

function T$(i){return document.getElementById(i)}
function T$$(e,p){return p.getElementsByTagName(e)}

TINY.accordion=function(){
    function slider(n){this.n=n; this.a=[]}
    slider.prototype.init=function(t,e,m,o,k){
        var a=T$(t), i=s=0, n=a.childNodes, l=n.length; this.s=k||0; this.m=m||0;
        for(i;i<l;i++){
            var v=n[i];
            if(v.nodeType!=3){
                this.a[s]={}; this.a[s].h=h=T$$(e,v)[0]; this.a[s].c=c=T$$('div',v)[0]; h.onclick=new Function(this.n+'.pr(-1,'+s+')');
                if(o==s){h.className=this.s; c.style.height='auto'; c.d=1}else{c.style.height=0; c.d=-1} s++
            }
        }
        this.l=s
    };
    slider.prototype.pr=function(f,d){
        for(var i=0;i<this.l;i++){
            var h=this.a[i].h, c=this.a[i].c, k=c.style.height; k=k=='auto'?1:parseInt(k); clearInterval(c.t);
            if((k!=1&&c.d==-1)&&(f==1||i==d)){
                c.style.height=''; c.m=c.offsetHeight; c.style.height=k+'px'; c.d=1; h.className=this.s; su(c,1)
            }else if(k>0&&(f==-1||this.m||i==d)){
                c.d=-1; h.className=''; su(c,-1)
            }
        }
    };
    function su(c){c.t=setInterval(function(){sl(c)},20)};
    function sl(c){
        var h=c.offsetHeight, d=c.d==1?c.m-h:h; c.style.height=h+(Math.ceil(d/5)*c.d)+'px';
        c.style.opacity=h/c.m; c.style.filter='alpha(opacity='+h*100/c.m+')';
        if((c.d==1&&h>=c.m)||(c.d!=1&&h==1)){if(c.d==1){c.style.height='auto'} clearInterval(c.t)}
    };
    return{slider:slider}
}();

 

Problem i think  is here for alpha opacity:

var h=c.offsetHeight, d=c.d==1?c.m-h:h; c.style.height=h+(Math.ceil(d/5)*c.d)+'px';
        c.style.opacity=h/c.m; c.style.filter='alpha(opacity='+h*100/c.m+')';
        if((c.d==1&&h>=c.m)||(c.d!=1&&h==1)){if(c.d==1){c.style.height='auto'} clearInterval(c.t)}

Script worl perfeckt for major browser, but in ie, not work correct, ie crash.

If i remove this code:

c.style.opacity=h/c.m; c.style.filter='alpha(opacity='+h*100/c.m+')';
        if((c.d==1&&h>=c.m)||(c.d!=1&&h==1)){if(c.d==1){c.style.height='auto'} clearInterval(c.t)}

not crash but height for (nested) not work correct fon any browser.

Please can give me help? Thanks...