一些常用的JS代码

<!--
//重新设置图片长宽
function DrawImage(ImgD,twidth,theight){
    var flag=false;
    var image=new Image();
    var iwidth = twidth;  //定义允许图片宽度
    var iheight = theight;  //定义允许图片高度
        image.src=ImgD.src;
    if(image.width>0 && image.height>0){
        flag=true;
        if(image.width/image.height>= iwidth/iheight){
            if(image.width>iwidth){  
                ImgD.width=iwidth;
                ImgD.height=(image.height*iwidth)/image.width;
            }else{
                ImgD.width=image.width;  
                ImgD.height=image.height;
            }
        }else{
            if(image.height>iheight){  
                ImgD.height=iheight;
                ImgD.width=(image.width*iheight)/image.height;  
            }else{
                ImgD.width=image.width;  
                ImgD.height=image.height;
            }
        }
    }
}

//带农历的日历，调用方式CalConv();
function CalConv(){
    FIRSTYEAR = 1998;
    LASTYEAR = 2031;
    today = new Date();
    SolarYear = today.getFullYear();
    SolarMonth = today.getMonth() + 1;
    SolarDate = today.getDate();
    Weekday = today.getDay();
    LunarCal = [
        new tagLunarCal( 27,  5, 3, 43, 1, 0, 0, 1, 0, 0, 1, 1, 0, 1, 1, 0, 1 ),
        new tagLunarCal( 46,  0, 4, 48, 1, 0, 0, 1, 0, 0, 1, 0, 1, 1, 1, 0, 1 ), /* 88 */
        new tagLunarCal( 35,  0, 5, 53, 1, 1, 0, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1 ), /* 89 */
        new tagLunarCal( 23,  4, 0, 59, 1, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1 ),
        new tagLunarCal( 42,  0, 1,  4, 1, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1 ),
        new tagLunarCal( 31,  0, 2,  9, 1, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 0 ),
        new tagLunarCal( 21,  2, 3, 14, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1 ), /* 93 */
        new tagLunarCal( 39,  0, 5, 20, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1 ),
        new tagLunarCal( 28,  7, 6, 25, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 1 ),
        new tagLunarCal( 48,  0, 0, 30, 0, 0, 1, 0, 0, 1, 0, 1, 1, 1, 0, 1, 1 ),
        new tagLunarCal( 37,  0, 1, 35, 1, 0, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 1 ), /* 97 */
        new tagLunarCal( 25,  5, 3, 41, 1, 1, 0, 0, 1, 0, 0, 1, 0, 1, 0, 1, 1 ),
        new tagLunarCal( 44,  0, 4, 46, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 1 ),
        new tagLunarCal( 33,  0, 5, 51, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1 ),
        new tagLunarCal( 22,  4, 6, 56, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0 ), /* 101 */
        new tagLunarCal( 40,  0, 1,  2, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0 ),
        new tagLunarCal( 30,  9, 2,  7, 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1 ),
        new tagLunarCal( 49,  0, 3, 12, 0, 1, 0, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1 ),
        new tagLunarCal( 38,  0, 4, 17, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 1, 0 ), /* 105 */
        new tagLunarCal( 27,  6, 6, 23, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 1, 1 ),
        new tagLunarCal( 46,  0, 0, 28, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 1, 0 ),
        new tagLunarCal( 35,  0, 1, 33, 0, 1, 1, 0, 1, 0, 0, 1, 0, 0, 1, 1, 0 ),
        new tagLunarCal( 24,  4, 2, 38, 0, 1, 1, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1 ), /* 109 */
        new tagLunarCal( 42,  0, 4, 44, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1 ),
        new tagLunarCal( 31,  0, 5, 49, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0 ),
        new tagLunarCal( 21,  2, 6, 54, 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1 ),
        new tagLunarCal( 40,  0, 0, 59, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1 ), /* 113 */
        new tagLunarCal( 28,  6, 2,  5, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 1, 1, 0 ),
        new tagLunarCal( 47,  0, 3, 10, 1, 0, 1, 0, 0, 1, 0, 0, 1, 1, 1, 0, 1 ),
        new tagLunarCal( 36,  0, 4, 15, 1, 1, 0, 1, 0, 0, 1, 0, 0, 1, 1, 0, 1 ),
        new tagLunarCal( 25,  5, 5, 20, 1, 1, 1, 0, 1, 0, 0, 1, 0, 0, 1, 1, 0 ), /* 117 */
        new tagLunarCal( 43,  0, 0, 26, 1, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1 ),
        new tagLunarCal( 32,  0, 1, 31, 1, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 0 ),
        new tagLunarCal( 22,  3, 2, 36, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0 ) ];
    /* 民國年每月之日數 */
    SolarCal = [ 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 ];
    /* 民國年每月之累積日數, 平年與閏年 */
    SolarDays = [  0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365, 396,  0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366, 397 ];
    AnimalIdx = ["马", "羊", "猴", "鸡", "狗", "猪", "鼠", "牛", "虎", "兔", "龙", "蛇" ];
    LocationIdx = [ "南", "东", "北", "西" ];
    if ( SolarYear <= FIRSTYEAR || SolarYear > LASTYEAR ) return 1;
    sm = SolarMonth - 1;
    if ( sm < 0 || sm > 11 ) return 2;
    leap = GetLeap( SolarYear );
    if ( sm == 1 )
        d = leap + 28;
    else
        d = SolarCal[sm];
    if ( SolarDate < 1 || SolarDate > d ) return 3;
    y = SolarYear - FIRSTYEAR;
    acc = SolarDays[ leap*14 + sm ] + SolarDate;
    kc = acc + LunarCal[y].BaseKanChih;
    Kan = kc % 10;
    Chih = kc % 12;
    Location = LocationIdx[kc % 4];
    Age = kc % 60;
    if ( Age < 22 )
        Age = 22 - Age;
    else
        Age = 82 - Age;
    Animal = AnimalIdx[ Chih ];
    if ( acc <= LunarCal[y].BaseDays ) {
        y--;
        LunarYear = SolarYear - 1;
        leap = GetLeap( LunarYear );
        sm += 12;
        acc = SolarDays[leap*14 + sm] + SolarDate;
     }
    else
        LunarYear = SolarYear;
            l1 = LunarCal[y].BaseDays;
    for ( i=0; i<13; i++ ) {
        l2 = l1 + LunarCal[y].MonthDays[i] + 29;
        if ( acc <= l2 ) break;
        l1 = l2;
     }
    LunarMonth = i + 1;
    LunarDate = acc - l1;
    im = LunarCal[y].Intercalation;
    if ( im != 0 && LunarMonth > im ) {
        LunarMonth--;
        if ( LunarMonth == im ) LunarMonth = -im;
     }
    if ( LunarMonth > 12 ) LunarMonth -= 12;
    today=new Date();
    function initArray(){
    this.length=initArray.arguments.length
    for(var i=0;i<this.length;i++)
    this[i+1]=initArray.arguments[i]}
    var d=new initArray("星期日","星期一","星期二","星期三","星期四","星期五","星期六");
    document.write("", today.getYear(),"年",today.getMonth()+1,"月",today.getDate(),"日 <font color=#008000>",d[today.getDay()+1],"</font> ");
    document.write( "农历:" + LunarMonth + "月" + LunarDate + "日" );
    //document.write( "煞" + Location + " 沖" + Animal + Age + "岁</span>" );
    return 0;
    }
     //求此民國年是否為閏年, 返回 0 為平年, 1 為閏年 */
    function GetLeap( year ){
        if ( year % 400 == 0 )
         return 1;
        else if ( year % 100 == 0 )
         return 0;
        else if ( year % 4 == 0 )
         return 1;
        else
         return 0;
     }
    function tagLunarCal( d, i, w, k, m1, m2, m3, m4, m5, m6, m7, m8, m9, m10, m11, m12, m13){
        this.BaseDays = d;         /* 到民國 1 月 1 日到農曆正月初一的累積日數 */
        this.Intercalation = i;    /* 閏月月份. 0==此年沒有閏月 */
        this.BaseWeekday = w;      /* 此年民國 1 月 1 日為星期幾再減 1 */
        this.BaseKanChih = k;      /* 此年民國 1 月 1 日之干支序號減 1 */
        this.MonthDays = [ m1, m2, m3, m4, m5, m6, m7, m8, m9, m10, m11, m12, m13 ]; /* 此農曆年每月之大小, 0==小月(29日), 1==大月(30日) */
}


//带星期日期时间
//使用方法：<span id="datetime"></span><script>tick("datetime")</script>
function showLocale(objD){
    var str,colorhead,colorfoot;
    var yy = objD.getYear();
    if(yy<1900) yy = yy+1900;
    var MM = objD.getMonth()+1;
    if(MM<10) MM = '0' + MM;
    var dd = objD.getDate();
    if(dd<10) dd = '0' + dd;
    var hh = objD.getHours();
    if(hh<10) hh = '0' + hh;
    var mm = objD.getMinutes();
    if(mm<10) mm = '0' + mm;
    var ss = objD.getSeconds();
    if(ss<10) ss = '0' + ss;
    var ww = objD.getDay();
    if  ( ww==0 )  colorhead="<font color=\"#FF0000\">";
    if  ( ww > 0 && ww < 6 )  colorhead="<font color=\"#000000\">";
    if  ( ww==6 )  colorhead="<font color=\"#008000\">";
    if  (ww==0)  ww="星期日";
    if  (ww==1)  ww="星期一";
    if  (ww==2)  ww="星期二";
    if  (ww==3)  ww="星期三";
    if  (ww==4)  ww="星期四";
    if  (ww==5)  ww="星期五";
    if  (ww==6)  ww="星期六";
    colorfoot="</font>"
    str = colorhead + yy + "-" + MM + "-" + dd + " " + hh + ":" + mm + ":" + ss + "  " + ww + colorfoot;
    return(str);
}
function tick(o){
    var o,today;
    today = new Date();
    document.getElementById(o).innerHTML = showLocale(today);
    window.setTimeout("tick(\""+o+"\")", 1000);
}

//加入收藏
function addFavorite(url,title){
    window.external.addFavorite(url,title);
    return false;
}

//设为首页
function setHomePage(url){
    document.body.style.behavior='url(#default#homepage)';
    document.body.setHomePage(url);
    return false;
}

//关闭窗口
function closeWin(){
    window.close();
    return false;
}

//打印
function printWin(){
    window.print();
    return false;
}
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