function getWURL(type,i){
    var date = new Date();
    var type;
    var dYear = date.getFullYear();
    var dMonth = date.getMonth() + 1;
    var dDay = date.getDate();
    var dHour = date.getHours();
    var picURL="http://www.cwb.gov.tw/V6/observe/satellite/Data/";
    var picType;

    //«¬ºA§PÂ_
    if(type==1){ picType = "s1p"; }else{ picType = "s3p"; }
    
    
    //®É¶¡­×¥¿
    if(i){ 
        if(dHour-1 < 0){
            dDay -= 1;
            dHour = "23";
        }else{
            dHour -= 1;
        }
    }
    
    if(dHour < 10)
        dHour = "0" + dHour;
    else if(dHour == 0)
        dHour = "00";

    if(dDay < 10) dDay = "0" + dDay;
    if(dMonth < 10) dMonth = "0" + dMonth;
    
    picURL += picType + "/" + picType + "-" + dYear+ "-" + dMonth+ "-" + dDay+ "-" + dHour+ "-00.jpg";
    
    return picURL;

}

document.write('<img width="255" height="200" src="' + getWURL(0,false) + '" onError="javascript:this.src=\'' + getWURL(0,true) + '\'">')