//图片按比例缩放
var flag=false;
function DrawImage(ImgD,iwidth,iheight){
// iwidth = 426;
// iheight = 280;
var image=new Image();
//var iwidth = 143; //定义允许图片宽度
//var iheight = 181; //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;
}
ImgD.alt=image.width+"×"+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;
}
ImgD.alt=image.width+"×"+image.height;
}
}
}
//调用：
//-->
//新开窗口
function openwin( url, winName, width, height,scroll){
xposition=0; yposition=0;
if(scroll == undefined) scroll = 1;
if ((parseInt(navigator.appVersion) >= 4 ))
{
xposition = (screen.width - width) / 2;
yposition = (screen.height - height) / 2;
}
theproperty= "width=" + width + ","
+ "height=" + height + ","
+ "location=0,"
+ "menubar=0,"
+ "resizable=0,"
+ "scrollbars="+scroll+","
+ "status=0,"
+ "titlebar=0,"
+ "toolbar=0,"
+ "hotkeys=0,"
+ "screenx=" + xposition + "," //仅适用于Netscape
+ "screeny=" + yposition + "," //仅适用于Netscape
+ "left=" + xposition + "," //IE
+ "top=" + yposition; //IE
window.open( url,winName,theproperty );
}
function showpic(num,ext,folder,obj,_next){
//alert(_next);
if(_next>num || num==0 || ext=='' || folder=='' || obj==''){
alert('已经没有了');
}
else{
next = _next?_next:0;
var less = num-next;
var html = '';
html += '';
html += '
';
html += '';
html += '';
if(next!=0) html += '上一张';
if(next!=num) html += ' 下一张'
if(next!=num) html += ' [还有'+less+'张]';
html += '
';
$(obj).html(html);
}
}