//控制左右列等高
function SameH(content_left,content_right)
{
var a=document.getElementById(content_left);
var b=document.getElementById(content_right);
if (a.scrollHeight < b.scrollHeight)
{
a.style.height = b.scrollHeight + "px";
}
else
{
b.style.height = a.scrollHeight + "px";
}
}
//--控制左右列等高结束

//搜索框输入空字符
function check()
{
var str = document.dafifrm.t.value;
if(str =="" || str.replace(/^\s+$/,'') == "")
{
alert("汗。。。输入查询内容啊！");
dafifrm.t.focus();
return false;
}
return true;
}
//搜索框结束

//新窗口打开链接
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;
//新窗口打开结束

//首页菜单
function switchTag(tag,menu_content)
{
for(i=1; i <7; i++)
{
if ("tag"+i==tag)
{
document.getElementById(tag).getElementsByTagName("a")[0].className="selectli"+i;
document.getElementById(tag).getElementsByTagName("a")[0].getElementsByTagName("span")[0].className="selectspan"+i;
}else{
document.getElementById("tag"+i).getElementsByTagName("a")[0].className="";
document.getElementById("tag"+i).getElementsByTagName("a")[0].getElementsByTagName("span")[0].className="";
}
if ("menu_content"+i==menu_content)
{
document.getElementById(menu_content).className="";
}
else
{
document.getElementById("menu_content"+i).className="hidecontent";
}
document.getElementById("menu_content").className=menu_content;
}
}
//首页菜单结束