defershowverifyimage.js

学习J2EE的好事例

var VCImageIsLoaded = false;
function deferShowVerifyImage()
{
	if(!VCImageIsLoaded)
	{
		var hide = document.getElementById("VCImageSrc");
		var area = document.getElementById("VCImageSpan");
		var tr   = area.parentNode.parentNode; 
		if(hide==null || area==null){VCImageIsLoaded = true; return;}
		tr.style.display = "";
		var img = document.createElement("IMG");
		img.alt = "VerifyCode";
		img.src = hide.value;
		area.appendChild(img);
		VCImageIsLoaded = true;
	}
}
window.attachEvent("onload", function()
{
	if(document.getElementById("PostComment.ascx_VKValidator"))
	{
		deferShowVerifyImage();
	}
});

document.attachEvent("onkeydown", deferShowVerifyImage);