function swHN(eventobj,opt){
	if(document.all){
		if(opt == 1){
			var liobjs=eventobj.nextSibling.children(0).children;
			var openflag=false;
			var sumli=liobjs.length;
			for(j=0;j<sumli;j++){
				if(liobjs.item(j).className=="li1"){
					openflag=true;
					break;
				}
			}
			if(openflag){
				eventobj.title="展开所有问题";
				for(j=0;j<sumli;j++){
					liobjs.item(j).className="";
				}
			}else{
				eventobj.title="闭合所有问题";
				for(j=0;j<sumli;j++){
					liobjs.item(j).className="li1";
				}
			}
		}else if(opt == 2){
			if(eventobj.parentElement.className==""){
				var curlicls="li1";
			}else{
				var curlicls="";
			}
			var liobjs=eventobj.parentElement.parentElement.children;
			var sumli=liobjs.length;
			for(j=0;j<sumli;j++){
				if(liobjs.item(j).className != "nullLi"){
					liobjs.item(j).className="";
				}
			}
			eventobj.parentElement.className=curlicls;
		}else{}
	}else{
		if(opt == 1){
			var liobjs=eventobj.nextSibling.nextSibling.childNodes[1].childNodes;			
			var openflag=false;
			var sumli=liobjs.length;
			for(j=1;j<sumli;j=j+2){
				if(liobjs[j].className=="li1"){
					openflag=true;
					break;
				}
			}
			if(openflag){
				eventobj.title="展开所有问题";
				for(j=1;j<sumli;j=j+2){
					liobjs[j].className="";
				}
			}else{
				eventobj.title="闭合所有问题";
				for(j=1;j<sumli;j=j+2){
					liobjs[j].className="li1";
				}
			}
		}else if(opt == 2){
			if(eventobj.parentNode.className==""){
				var curlicls="li1";
				//eventobj.parentNode.parentNode.parentNode.previousSibling.previousSibling.title="闭合所有问题";
			}else{
				var curlicls="";
				//eventobj.parentNode.parentNode.parentNode.previousSibling.previousSibling.title="展开所有问题";
			}
			var liobjs=eventobj.parentNode.parentNode.childNodes;
			var sumli=liobjs.length;
			for(j=1;j<sumli;j=j+2){
				if(liobjs[j].className != "nullLi"){
					liobjs[j].className="";
				}
			}
			eventobj.parentNode.className=curlicls;
		}else{}
	}
}