nav = document.layers;
IE4 = document.all;

isNav4 = (nav) ? true : false;
isIE4 = (IE4) ? true : false; 

if(isNav4){

function allobj(ID){ 


this.style = document.layers[ID]; 
}

document.all = new Array(); 

}

function init(){ 
if(isNav4){ 
     end = document.layers.length;

for(i=0; i < end; i++){

id = document.layers[i].name;

document.all[id] = new allobj(id);


}
     }
}