var img1 = new Image();
var img2 = new Image();
var img3 = new Image();
var img4 = new Image();
img1.src = '/images/filter/arrow_down_a.gif';
img2.src = '/images/filter/arrow_down.gif';
img3.src = '/images/filter/arrow_up_a.gif';
img4.src = '/images/filter/arrow_up.gif';

function set_img(obj,num){
 if(num<=0)return;
 obj.src = eval("img"+num).src;
}

function setCookie (name, value, expires, path, domain, secure) {
      document.cookie = name + "=" + escape(value) +
        ((expires) ? "; expires=" + expires : "") +
        ((path) ? "; path=" + path : "") +
        ((domain) ? "; domain=" + domain : "") +
        ((secure) ? "; secure" : "");
}
function getCookie(name) {
	var cookie = " " + document.cookie;
	var search = " " + name + "=";
	var setStr = null;
	var offset = 0;
	var end = 0;
	if (cookie.length > 0) {
		offset = cookie.indexOf(search);
		if (offset != -1) {
			offset += search.length;
			end = cookie.indexOf(";", offset)
			if (end == -1) {
				end = cookie.length;
			}
			setStr = unescape(cookie.substring(offset, end));
		}
	}
	return(setStr);
}

function showhide(){
 var tblSearch = document.getElementById("tblSearch");
 if(tblSearch.style.display == "none" || tblSearch.style.display == ""){
  tblSearch.style.display = "block";
  document.getElementById("ex_searchs").style.display = "none";
  document.getElementById("ex_searchh").style.display = "block";
  setCookie("filter_params","open","Mon, 01-Jan-2011 00:00:00 GMT", "/");
  return true;
 }
 if(tblSearch.style.display == "block" ){
  tblSearch.style.display = "none";
  document.getElementById("ex_searchh").style.display = "none";
  document.getElementById("ex_searchs").style.display = "block";
  setCookie("filter_params","close","Mon, 01-Jan-2011 00:00:00 GMT", "/");
  return true;
 }
}