var fold = new Object();
var opened=0;
function slide(el) {

    if(fold[el.id] == 1) {
      Effect.SlideUp(el,{duration:1.2});
      fold[el.id] = 0;
		opened = 0;
    } else {
      Effect.SlideDown(el,{duration:1.2});
      fold[el.id] = 1;
		opened = el.id;
    }
}

function slide_ud(el, link) {

    if(fold[el.id] == 1) {
      Effect.SlideUp(el,{duration:1.2, afterFinish:function(){link.style.backgroundImage = 'url(/img/arr_down.gif)';}});
      fold[el.id] = 0;
			//link.style.backgroundImage = 'url(/img/arr_down.gif)';
		opened = 0;
    } else {
      Effect.SlideDown(el,{duration:1.2, afterFinish:function(){link.style.backgroundImage = 'url(/img/arr_up.gif)';}});
      fold[el.id] = 1;
			//link.style.backgroundImage = 'url(/img/arr_up.gif)';
		opened = el.id;
    }
}