function getObj(name){
	if (document.getElementById){
		this.obj = document.getElementById(name);
		this.style = document.getElementById(name).style;
	}else if (document.all){
		this.obj = document.all[name];
		this.style = document.all[name].style;
	}else if (document.layers){
		this.obj = document.layers[name];
		this.style = document.layers[name];
	}
}


function openFilterBox(){
	var filterBoxUI = new getObj('filterBox');
	var filterLinkUI = new getObj('filterLink');
	
	if(filterBoxOpen){
		sign = "[+]";
		filterBoxUI.style.display = "none";
		filterBoxOpen = false;
	}else{
		sign = "[-]";
		filterBoxUI.style.display = "block";
		filterBoxOpen = true;
	}
	
	filterLinkUI.obj.innerHTML = sign;
}

//window.onLoad = openFilterBox();