UP!!! cosa c'è che non va alla linea 3?

function ccbrowsercheck(){
this.ver=navigator.appVersion
this.dom=document.getElementById?1:0
this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom)?1:0;
this.ie4=(document.all && !this.dom)?1:0;
this.ns5=(this.dom && parseInt(this.ver) >= 5) ?1:0;
this.ns4=(document.layers && !this.dom)?1:0;
this.bw=(this.ie5 || this.ie4 || this.ns4 || this.ns5)
return this
}

bw=new ccbrowsercheck()

function cchidediv(div){
if(bw.bw){
div="divLoadCont"
obj=bw.dom?document.getElementById(div).style:bw.i e4?document.all[div].style:bw.ns4?document[div]:0;
obj.visibility='hidden'
}
}

onload=cchidediv;