bg = new Array(30); //设定图片数量，如果图片数为3，这个参数就设为2，依次类推
bg[0] = '/front/images/bgimg/080605_tupperware.jpg'; //显示的图片路径，可用http://
bg[1] = '/front/images/bgimg/080612_montagne.jpeg';
bg[2] = '/front/images/bgimg/080619_frite.jpg';
bg[3] = '/front/images/bgimg/080626_glace.jpg';
bg[4] = '/front/images/bgimg/080703_fermier.jpg';
bg[5] = '/front/images/bgimg/080703_primeurs.jpg';
bg[6] = '/front/images/bgimg/080828_bic.jpg';
bg[7] = '/front/images/bgimg/080904_petitbeurre.jpg';
bg[8] = '/front/images/bgimg/080911_graff1.jpg';
bg[9] = '/front/images/bgimg/080916_usa.jpeg';
bg[10] = '/front/images/bgimg/080925_coulisses.jpg';
bg[11] = '/front/images/bgimg/080925_rideau.jpg';
bg[12] = '/front/images/bgimg/080911_graff1.jpg';
bg[13] = '/front/images/bgimg/081009_plaque.jpeg';
bg[14] = '/front/images/bgimg/081016_roots.jpg';
bg[15] = '/front/images/bgimg/081023_jeans.jpeg';
bg[16] = '/front/images/bgimg/081029_tambour.jpeg';
bg[17] = '/front/images/bgimg/081106_magazines.jpg';
bg[18] = '/front/images/bgimg/081106_parfum.jpg';
bg[19] = '/front/images/bgimg/081113.jpg';
bg[20] = '/front/images/bgimg/081120_connection.jpeg';
bg[21] = '/front/images/bgimg/081216_parfum.jpg';
bg[22] = '/front/images/bgimg/090108_voiture.jpg';
bg[23] = '/front/images/bgimg/090115_pomme.jpg';
bg[24] = '/front/images/bgimg/090129_couleurs.jpg';
bg[25] = '/front/images/bgimg/090205_ceintre.jpg';
bg[26] = '/front/images/bgimg/090212_coiffeur.jpg';
bg[27] = '/front/images/bgimg/090219_voitire1.jpg';
bg[28] = '/front/images/bgimg/090219_voitire2.jpg';
bg[29] = '/front/images/bgimg/090226_100kal1.jpg';
bg[30] = '/front/images/bgimg/090226_100kal2.jpg';

var myDate =new Date();
var day=0;
var d = new Date();
if(myDate.getDay()==0){
	d.setTime(d.getTime()-1000*60*60*24*6);
	day =d.getDate();
}else if(myDate.getDay()==1){
	day =myDate.getDate();
}else if(myDate.getDay()==2){
	d.setTime(d.getTime()-1000*60*60*24);
	day =d.getDate();
}else if(myDate.getDay()==3){
	d.setTime(d.getTime()-1000*60*60*24*2);
	day =d.getDate();
}else if(myDate.getDay()==4){
	d.setTime(d.getTime()-1000*60*60*24*3);
	day =d.getDate();
}else if(myDate.getDay()==5){
	d.setTime(d.getTime()-1000*60*60*24*4);
	day =d.getDate();
}else if(myDate.getDay()==6){
	d.setTime(d.getTime()-1000*60*60*24*5);
	day =d.getDate();
}
document.getElementById("bottom").style.backgroundImage="url("+bg[day]+")";