var imagerror=false;
var img=null;
function checkimage(){
	imagerror=false;
	if(img)img.removeNode(true);
	img=document.createElement("img");
	img.style.position="absolute";
	img.style.visibility="hidden";
	img.attachEvent("onerror",ErrImgType);
	//document.body.insertAdjacentElement("beforeend",img);
	img.src=document.publish.P_image.value;

	if (!imagerror) {
		document.all.view.src = document.publish.P_image.value;
		if(img.width==0) setTimeout('ResizeImg()',500);
		document.all.view.height=img.height;
		document.all.view.width=img.width;
		if (img.width>600)	{
			document.all.view.height=img.height*600/img.width;
			document.all.view.width=600;
		}
		document.all.viewpic.style.display='';
	}
}
function ErrImgType(){
	imagerror=true;
	document.publish.P_image.value='';
	document.all.viewpic.style.display='none';
	alert("只能上传jpeg或gif图形文件");
	return false;
}
function ResizeImg() {
	if(img.width==0) setTimeout('ResizeImg()',500);
	document.all.view.height=img.height;
	document.all.view.width=img.width;
	if (img.width>600)	{
		document.all.view.height=img.height*600/img.width;
		document.all.view.width=600;
	}
}
function submit_form() {
	document.publish.B1.disabled=true;
	if (document.publish.B2) document.publish.B2.disabled=true;
	document.publish.B1.value='正在发送,请稍候...';
	document.publish.submit();
}
function show_vote() {
	if (document.all.P_vote.checked==true) document.all.pubvote.style.display='';else document.all.pubvote.style.display='none';
}