function toggleQuestion(question) {
	var zz=$("a[id^='tgl_']");
	for(var tz=0;tz<zz.length;tz++){
		cur_id=zz[tz].id.split("_")[1];
		if(question==cur_id){
			if($('p#q'+cur_id).css('visibility')=='hidden'){
				$('p#q'+cur_id).css({'visibility':'visible','position':'static'});
				$('img#exp_col_'+cur_id).attr('src','images/graphic_colapse.gif');			   
				
			}
		}else{
			$('p#q'+cur_id).css({'visibility':'hidden','position':'absolute'});
			$('img#exp_col_'+cur_id).attr('src','images/graphic_expand.gif');
		}
	}
}