//cookie functions from http://www.webmasterbase.com/static/popjs.php
function getCookieVal (offset) {
var endstr = document.cookie.indexOf (";", offset);
if (endstr == -1)
endstr = document.cookie.length;
return unescape(document.cookie.substring(offset, endstr));
}

function GetCookie (name) {
var arg = name + "=";
var alen = arg.length;
var clen = document.cookie.length;
var i = 0;
while (i < clen) {
var j = i + alen;
if (document.cookie.substring(i, j) == arg)
return getCookieVal (j);
i = document.cookie.indexOf(" ", i) + 1;
if (i == 0) 
break; 
}
return null;
}

function SetCookie (name, value) {
var argv = SetCookie.arguments;
var argc = SetCookie.arguments.length;
var expires = (2 < argc) ? argv[2] : null;
var path = (3 < argc) ? argv[3] : null;
var domain = (4 < argc) ? argv[4] : null;
var secure = (5 < argc) ? argv[5] : false;
document.cookie = name + "=" + escape (value) +
((expires == null) ? "" : ("; expires=" + expires.toGMTString())) +
((path == null) ? "" : ("; path=" + path)) +
((domain == null) ? "" : ("; domain=" + domain)) +
((secure == true) ? "; secure" : "");
}

var rowShow=(document.all?'block':'table-row');

function toggleRows(prefix) {
	var el,i,state;
	for (i=0; el=document.getElementById(prefix+i); i++) {
		state=('none'==el.style.display?1:0);
		el.style.display=(state?rowShow:'none');
	}
	SetCookie('rowShowState'+prefix, state);
}

function setFromState(prefix) {
	var el,i,state=GetCookie('rowShowState'+prefix)*1;
	for (i=0; el=document.getElementById(prefix+i); i++) {
		el.style.display=(state?rowShow:'none');
	}
}