function $(o){
 var o=document.getElementById(o)?document.getElementById(o):o;
 return o;
}

function loadimg(n){
	$("img1").src=imgarray[n]; 
	$("explain").innerHTML=txtarray[n];
	$("explain1").innerHTML=txtarray[n];
	}
function leftimg(n){  
	ipos--;  
	ipos2=ipos;  
	if(ipos2<0){
		ipos2=n;
		ipos=n;
	}  
	$("img1").src=imgarray[ipos2]; 
	$("explain").innerHTML=txtarray[ipos2];
	$("explain1").innerHTML=txtarray[ipos2];
	
} 
//参数n为图片数组的最大下标
function rightimg(n){  
	ipos++;  
	ipos2=ipos;  
	if(ipos2>n){
		ipos2=0;
		ipos=0;
	}  
	$("img1").src=imgarray[ipos2]; 
	$("explain").innerHTML=txtarray[ipos2];
	$("explain1").innerHTML=txtarray[ipos2];
}  

function copyToClipboard(txt) {    
     if(window.clipboardData) {    
             window.clipboardData.clearData();    
             window.clipboardData.setData("Text", txt);    
     } else if(navigator.userAgent.indexOf("Opera") != -1) {    
          window.location = txt;    
     } else if (window.netscape) {    
          try {    
               netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");    
          } catch (e) {    
               alert("被浏览器拒绝！\n请在浏览器地址栏输入'about:config'并回车\n然后将'signed.applets.codebase_principal_support'设置为'true'");    
          }    
          var clip = Components.classes['@mozilla.org/widget/clipboard;1'].createInstance(Components.interfaces.nsIClipboard);    
          if (!clip)    
               return;    
          var trans = Components.classes['@mozilla.org/widget/transferable;1'].createInstance(Components.interfaces.nsITransferable);    
          if (!trans)    
               return;    
          trans.addDataFlavor('text/unicode');    
          var str = new Object();    
          var len = new Object();    
          var str = Components.classes["@mozilla.org/supports-string;1"].createInstance(Components.interfaces.nsISupportsString);    
          var copytext = txt;    
          str.data = copytext;    
          trans.setTransferData("text/unicode",str,copytext.length*2);    
          var clipid = Components.interfaces.nsIClipboard;    
          if (!clip)    
               return false;    
          clip.setData(trans,null,clipid.kGlobalClipboard);    
     }    
}



//获取XMLHttpRequest对象
function GetXmlHttpObject()
{
  	var xmlHttpObj=null;
  	try
    {
    	// Firefox, Opera 8.0+, Safari
    	xmlHttpObj=new XMLHttpRequest();
    }
  	catch (e)
   	{
    	// Internet Explorer
    	try
      	{
      		xmlHttpObj=new ActiveXObject("Msxml2.XMLHTTP");
      	}
    	catch (e)
      	{
      		xmlHttpObj=new ActiveXObject("Microsoft.XMLHTTP");
      	}
    }
  	return xmlHttpObj;
}

var xmlHttp;

function setskin(u,k)
{
	var s='?UserName='+u+'&skin='+k;
	xmlHttp=GetXmlHttpObject();
  	if (xmlHttp==null)
    {
    	alert ("您的浏览器不支持AJAX！");
    	return;
    }

	xmlHttp.onreadystatechange = callbackhandle;
	
	var url='xmlproc/setskin.aspx';
	url=url+s;
	
	xmlHttp.open("GET",url,true);
	
  	//xmlHttp.open("POST",url,true);
    //xmlHttp.setRequestHeader("Content-Length",s.length);
    //xmlHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded;");  //用POST的时候一定要有这句

  	xmlHttp.send();
	
	//alert(s);
}