function findImg() {
var charImg = document.all("chartImg").getElementsByTagName("img");
var imgURLs = "";
for (var i = 0; i < charImg.length; i++) {
var imgPath = getImgPath(charImg[i].src);
var imgNames=getImgNames(imgPath);
if (imgNames!= "vt2.png") {
imgURLs += imgNames; //If use the document. GetElementsByTagName (" img ") [I]. SRC; Every time you take an image address, you will find all the images, so the efficiency is low, or better stored in imgs!
}
}
alert( imgURLs);

}