function externallinks() { 
 if (!document.getElementsByTagName) return; 
 var anchors = document.getElementsByTagName("a"); 
 for (var i=0; i<anchors.length; i++) { 
   var anchor = anchors[i]; 
   if (anchor.getAttribute("href") && 
       anchor.getAttribute("rel") == "external") 
     anchor.target = "_blank"; 
 } 
} 
window.onload = externallinks;


//查询的域名
									// require trimString()
									function fn_CheckWhoisForm(theForm)
									{
										if ( theForm.domainname.value=='')
										{   alert('请输入要查询的域名');
											return false;
										}
										return true;
									}

/*第一二种菜单更换显示样式*/
function setTab(m,n){
var tli=document.getElementById("menu"+m).getElementsByTagName("li");
var mli=document.getElementById("main"+m).getElementsByTagName("ul");
for(i=0;i<tli.length;i++){
tli[i].className=i==n?"hover":"";
mli[i].style.display=i==n?"block":"none";
}
}