var imgTimerID;
var img2;
function ImageWindow(img){
img2 = new Image();
img2.src = img;
clearInterval(imgTimerID);
imgTimerID = setInterval("loadImage()", 100);
}
function loadImage(){
if (img2.complete){
clearInterval(imgTimerID);
popupwindow();
}
}
function popupwindow(){
width = img2.width+20;
height = img2.height+70;
x = (screen.width - width) / 2;
y = (screen.height - height) / 2;
var opt = "";
opt+='directories=0,toolbar=0,menubar=0,scrollbars=yes,status=0,resizable=0';
opt+=',width='+width+',height='+height+',';
opt+='top='+y+',left='+x;
jsw = window.open('','imgpop',opt);
jsw.focus();
jsw.document.open();
htm = '\n';
htm+='\n';
htm+='\n';
htm+='\n';
htm+='\n';
htm+='拡大画像<\/title>\n';
htm+='<\/head>\n';
htm+='<body style="margin:0; padding:0;">\n';
htm+='<a href="javascript:window.close();">\n';
width = width-20;
height = height-70;
htm+='<img src="'+img2.src+'" width="'+width+'" height="'+height+'" border="0" alt="画像をクリックするとウィンドウを閉じます" />\n';
htm+='<\/a>\n';
htm+='<p align="center"><input type="button" value="閉じる" onClick="window.close()" /></p>\n';
htm+='<\/body>\n<\/html>\n';
jsw.document.write(htm);
jsw.document.close();
}