function changeLink(e, eid) {
	var param;
	if (e!='') {
	    param = '&sstat='+e;
	    var elemname = 'linkreserv'+eid;
	    var fp = document.getElementById(elemname).href.length-param.length;
	    
	    if (document.getElementById(elemname).href.substr(fp, param.length-3) == '&sstat=') {
	    	document.getElementById(elemname).href = document.getElementById(elemname).href.substring(0, (document.getElementById(elemname).href.length-param.length));	
	    }
	    document.getElementById(elemname).href = document.getElementById(elemname).href + '&sstat='+e;
	}
}