function pulldown(id, src){
	if(document.all){
//alert(document.all[id].style.display);
		if (document.all[id].style.display == 'none'){
			document.all[id].style.display = 'block';
			document.images[src].src = "../common/images/inner_-.gif";
		}else{
			document.all[id].style.display = 'none';
			document.images[src].src = "../common/images/inner_+.gif";
		}
	}
	if(document.layers){
		if (document.layers[id].display == 'none'){
			document.layers[id].display = 'block';
			document.images[src].src = "../common/images/inner_-.gif";
		}else{
			document.layers[id].display = 'none';
			document.images[src].src = "../common/images/inner_+.gif";
		}
	}
	if(!document.all && document.getElementById){ 
		if (document.getElementById(id).style.display == 'none'){
			document.getElementById(id).style.display = 'block';
			document.images[src].src = "../common/images/inner_-.gif";
		}else{
			document.getElementById(id).style.display = 'none';
			document.images[src].src = "../common/images/inner_+.gif";
		}
	}
}