// 说明：用 JavaScript 实现网页图片等比例缩放 
function DrawImage(ImgD,Imgwidth){ 
    var image=new Image(); 
    image.src=ImgD.src; 
    if(image.width>0 && image.height>0){ 
    if(image.width>Imgwidth)
    {ImgD.width=Imgwidth;}
    } 
}
//搜索选择
function Soitem()
{
var tag = document.getElementById("searchItem").getElementsByTagName("li");
var taglength = tag.length;
for(i=0; i<taglength; i++){
	if(tag[i].className!="li_none")
		{
			tag[i].onclick=function(){
			var tag = document.getElementById("searchItem").getElementsByTagName("li");
			var taglength = tag.length;
			for(j=0;j<taglength;j++)
			{tag[j].className = "";}
			this.className = "act";
			switch(this.id)
			{
			    case "soq":document.getElementById("frmso").action="/Search.aspx?typeid=1";
			    break;
			    case "soc":document.getElementById("frmso").action="/Search.aspx?typeid=2";
			    break;
			    case "soy":document.getElementById("frmso").action="/Search.aspx?typeid=3";
			    break;
			    case "sog":document.getElementById("frmso").action="/Search.aspx?typeid=4";
			    break;
			}
			};
		}
	}
}
//检测搜索关键字
function Check()
{
    if(document.getElementById("sokey").value=="")
    {
        alert("请输入要搜索的内容");
        return false;
    }
    return true;
}
function setTab(name,cursel,n){
for(i=1;i<=n;i++){
var menu=document.getElementById(name+i);
var con=document.getElementById("con_"+name+"_"+i);
menu.className=i==cursel?"checked":"";
con.style.display=i==cursel?"block":"none";
}
}