function myBack(n) { if(navigator.appVersion.charAt(0) <=2 && navigator.appName.charAt(0) == "N") { t = new Date() t = t.getTime(); t += ""; t = t.substring(t.length-3,t.length); t = eval(t)/1000 t = Math.floor(t*n) return t } else { t = Math.floor(Math.random()*n) return t } } var imgMax =2 var backimage = new Array() backimage[0] = "global/bg/bg_01.jpg" backimage[1] = "global/bg/bg_02.jpg" var img = myBack(imgMax); document.write("")