function getStudentId(queryString) { if(queryString==null) return ""; var querySubstr = ""; var studentId = ""; if(queryString.length>1) querySubstr = queryString.substring(1, queryString.length); var queryVars = querySubstr.split("&"); var qVar, qKey, qValue; for(var i=0; i0) qKey = qVar[0]; if(qVar.length>1) qValue = qVar[1]; if(qKey == "student_id") { studentId = qValue; } } return studentId; } function getStudentIdStr() { var stId = getStudentId(window.location.search); if(stId.length!=0) return "&student_id="+stId; else return ""; } document.write(''); document.write(''); document.write(''); document.write(''); document.write(''); document.write('');