<!--
function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
//-->

if(document.images) { 
var a = new Array(); 
a[0] = 'images/guide_hover.jpg'; 
a[1] = 'images/nav_btn_06.gif'; 
a[2] = 'images/lihover.jpg'; 
a[3] = 'images/shipin_18.gif'; 
a[4] = 'images/shipin_21.gif'; 
var image;
for(var i=0;i<a.length;i++){ 
image=new Image(); 
image.src=a[i]; 
} 
}



var t_id = setInterval(animate,20);
var pos=0;
var dir=2;
var len=0;
function animate()
{
var elem = document.getElementById('progress');
if(elem != null) {
if (pos==0) len += dir;
if (len>32 || pos>79) pos += dir;
if (pos>79) len -= dir;
if (pos>79 && len==0) pos=0;
elem.style.left = pos;
elem.style.width = len;
}
}
function remove_loading(obj) {
this.clearInterval(t_id);
var targelem = document.getElementById('loader_container');
targelem.style.display='none';
targelem.style.visibility='hidden';
var t_id = setInterval(animate,60);
}

var offsetfrommouse=[15,25]; //image x,y offsets from cursor position in pixels. Enter 0,0 for no offset
var displayduration=0; //duration in seconds image should remain visible. 0 for always.

var defaultimageheight = 200;	// maximum image size.
var defaultimagewidth = 200;	// maximum image size.

var timer;

function gettrailobj(){
if (document.getElementById)
return document.getElementById("preview_div").style
}

function gettrailobjnostyle(){
if (document.getElementById)
return document.getElementById("preview_div")
}


function truebody(){
return (!window.opera && document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
}


function hidetrail(){	
	gettrailobj().display= "none";
	document.onmousemove=""
	gettrailobj().left="-500px"
	clearTimeout(timer);
}

function showtrail(imagename,title,descr,width,height){
	i = imagename
	t = title
	d=descr
	w = width
	h = height
	timer = setTimeout("show('"+i+"',t,d,w,h);",200);
}
function show(imagename,title,descr,width,height){
 
    var docwidth=document.all? truebody().scrollLeft+truebody().clientWidth : pageXOffset+window.innerWidth - offsetfrommouse[0]
	var docheight=document.all? Math.min(truebody().scrollHeight, truebody().clientHeight) : Math.min(window.innerHeight)

	if( (navigator.userAgent.indexOf("Konqueror")==-1  || navigator.userAgent.indexOf("Firefox")!=-1 || (navigator.userAgent.indexOf("Opera")==-1 && navigator.appVersion.indexOf("MSIE")!=-1)) && (docwidth>650 && docheight>500)) {
		( width == 0 ) ? width = defaultimagewidth: '';
		( height == 0 ) ? height = defaultimageheight: '';
			
		width+=30
		height+=55
		defaultimageheight = height
		defaultimagewidth = width
	
		document.onmousemove=followmouse; 

		
		newHTML = '<div class="border_preview" style="width:'+  width +'px;height:'+ height +'px"><div id="loader_container"><div id="loader"><div align="center">Welcome to easyhoo.cn...</div><div id="loader_bg"><div id="progress"> </div></div></div></div>';
		newHTML = newHTML + '<h3 class="title_h2">' + ' '+title + '</h3>'
		
    	newHTML = newHTML + '<div class="preview_temp_load"><img onload="javascript:remove_loading(this);" src="' + imagename + '" border="0"><br><Br><div align="left">'+descr+'</div></div>';
		newHTML = newHTML + '</div>'; 
		
		if(navigator.userAgent.indexOf("MSIE")!=-1 && navigator.userAgent.indexOf("Opera")==-1 ){
			newHTML = newHTML+'<iframe src="about:blank" scrolling="no" frameborder="0" width="'+width+'" height="'+height+'"></iframe>';
		}		

		gettrailobjnostyle().innerHTML = newHTML;
		gettrailobj().display="block";
	}
}

function followmouse(e){

	var xcoord=offsetfrommouse[0]
	var ycoord=offsetfrommouse[1]

	var docwidth=document.all? truebody().scrollLeft+truebody().clientWidth : pageXOffset+window.innerWidth-15
	var docheight=document.all? Math.min(truebody().scrollHeight, truebody().clientHeight) : Math.min(window.innerHeight)

	if (typeof e != "undefined"){
		if (docwidth - e.pageX < defaultimagewidth + 2*offsetfrommouse[0]){
			xcoord = e.pageX - xcoord - defaultimagewidth; // Move to the left side of the cursor
		} else {
			xcoord += e.pageX;
		}
		if (docheight - e.pageY < defaultimageheight + 2*offsetfrommouse[1]){
			ycoord += e.pageY - Math.max(0,(2*offsetfrommouse[1] + defaultimageheight + e.pageY - docheight - truebody().scrollTop));
		} else {
			ycoord += e.pageY;
		}

	} else if (typeof window.event != "undefined"){
		if (docwidth - event.clientX < defaultimagewidth + 2*offsetfrommouse[0]){
			xcoord = event.clientX + truebody().scrollLeft - xcoord - defaultimagewidth; // Move to the left side of the cursor
		} else {
			xcoord += truebody().scrollLeft+event.clientX
		}
		if (docheight - event.clientY < (defaultimageheight + 2*offsetfrommouse[1])){
			ycoord += event.clientY + truebody().scrollTop - Math.max(0,(2*offsetfrommouse[1] + defaultimageheight + event.clientY - docheight));
		} else {
			ycoord += truebody().scrollTop + event.clientY;
		}
	}
	gettrailobj().left=xcoord+"px"
	gettrailobj().top=ycoord+"px"

}



<!--
function check() {

	if (add.fname.value=="") {
	    alert("请输入您的姓名！");
		add.fname.focus();	    
		return false;
	}
	if (add.email.value==""){ 
	  	alert("请输入电子邮件地址！");
		add.email.focus();	    
		return false;
	}		
	var filter=/^\s*([A-Za-z0-9_-]+(\.\w+)*@(\w+\.)+\w{2,3})\s*$/;
    if (!filter.test(document.add.email.value)) { 
    	alert("邮件地址不正确,请重新填写！"); 
        document.add.email.focus();
        document.add.email.select();
        return (false); 
    }    
}




function cswitch(tid,box,num,tag){
if(tid==null || box==null || num==null) return;
var tabs=document.getElementById(tid);
if(tabs==null) return;
if(tag=="") tag="LI";
tabs=tabs.getElementsByTagName(tag);
for(n=0;n<tabs.length;n++){
	 if(num==n){
		tabs[n].id="noww";
		document.getElementById(box+n).className="shipin show";
	 }else{
		tabs[n].id="";
		document.getElementById(box+n).className="hide";
	 }	
}	
}


function process(tid,box,num,tag){
if(tid==null || box==null || num==null) return;
var tabs=document.getElementById(tid);
if(tabs==null) return;
if(tag=="") tag="LI";
tabs=tabs.getElementsByTagName(tag);
for(n=0;n<tabs.length;n++){
	 if(num==n){
		tabs[n].id="currentt";
		document.getElementById(box+n).className="movee_l show";
	 }else{
		tabs[n].id="";
		document.getElementById(box+n).className="hide";
	 }	
}	
}




		function GetObj(objName){
			if(document.getElementById){
				return eval('document.getElementById("' + objName + '")');
			}else if(document.layers){
				return eval("document.layers['" + objName +"']");
			}else{
				return eval('document.all.' + objName);
			}
		}
		function Menu(index,flag){
			for(var i=0;i<40;i++){
				if(GetObj("con"+i)&&GetObj("m"+i)){
					GetObj("con"+i).style.display = 'none';
					GetObj("m"+i).className = "menuOff";
					GetObj("m"+1).className = "menuOff2";
				}
			}
			if(GetObj("con"+index)&&GetObj("m"+index)){
				GetObj("con"+index).style.display = 'block';
				GetObj("m"+index).className = "menuOn";
			}
		}