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 save_size(sign, size)
{
	csize=getCookie('size');
	namec='size';
	if(csize!=null)
		valuec=csize+'_'+sign+'_'+size;
	else
		valuec=sign+'_'+size;
	setCookie(namec, valuec);
}
function save_mat(sign, mat)
{
	csize=getCookie('mat');
	namec='mat';
	if(csize!=null)
		valuec=csize+'_'+sign+'_'+mat;
	else
		valuec=sign+'_'+mat;
	setCookie(namec, valuec);
}