function random(){
var ramimage = new Array("/common/images/topkey_foreign1.jpg","/common/images/topkey_foreign2.jpg","/common/images/topkey_foreign3.jpg","/common/images/topkey_foreign4.jpg");
var dd = new Date();
var sec = dd.getSeconds()
var curimg = ramimage[sec % ramimage.length];
document.write("<h2 id=\"topKey\"><img src=\"" + curimg + "\" alt=\"Be Student-oriented\" WIDTH=\"754\" HEIGHT=\"195\" /></h2>");
}
random();