function menuChange1(i)
{
    for(j=1;j<=3;j++)
    {
        document.getElementById("main_title2_w48_"+j).style.color="#039";
		document.getElementById("main_title2_w48_"+j).style.background="#F2F7FD";
		document.getElementById("main_title2_w48_"+j).style.width="48px";
		document.getElementById("box3_xppc"+j).style.display="none";
    }
    document.getElementById("main_title2_w48_"+i).style.color="#f60";
	document.getElementById("main_title2_w48_"+i).style.fontweight="blod";
    document.getElementById("main_title2_w48_"+i).style.background="#fff";
	document.getElementById("main_title2_w48_"+i).style.width="48px";
	document.getElementById("box3_xppc"+i).style.display="block";
}
function menuChange2(i)
{
    for(j=1;j<=3;j++)
    {
        document.getElementById("main_title_22_"+j).style.fontWeight="normal";
		document.getElementById("main_title_22_"+j).style.background="#F2F7FD";
		document.getElementById("mainNo4_text"+j).style.display="none";
    }
	document.getElementById("main_title_22_"+i).style.fontWeight="bold";
    document.getElementById("main_title_22_"+i).style.background="#fff";
	document.getElementById("mainNo4_text"+i).style.display="block";
}
function menuChange3(i)
{
    for(j=1;j<=3;j++)
    {
        document.getElementById("expotitle_"+j).style.fontWeight="normal";
		document.getElementById("expotitle_"+j).style.background="#F2F7FD";		
		document.getElementById("expo_"+j).style.display="none";
    }
	document.getElementById("expotitle_"+i).style.fontWeight="bold";
    document.getElementById("expotitle_"+i).style.background="#fff";
	document.getElementById("expo_"+i).style.display="block";
}
function menuChange4(i)
{
    for(j=1;j<=2;j++)
    {
        document.getElementById("w64_"+j).style.fontWeight="normal";
		document.getElementById("w64_"+j).style.background="#F2F7FD";		
		document.getElementById("main_price_"+j).style.display="none";
    }
	document.getElementById("w64_"+i).style.fontWeight="bold";
    document.getElementById("w64_"+i).style.background="#fff";
	document.getElementById("main_price_"+i).style.display="block";
}
function menuChange5(i)
{
    for(j=1;j<=2;j++)
    {
        document.getElementById("main_title2_w64_"+j).style.fontWeight="normal";
		document.getElementById("main_title2_w64_"+j).style.background="#F2F7FD";		
		document.getElementById("product_class"+j).style.display="none";
    }
	document.getElementById("main_title2_w64_"+i).style.fontWeight="bold";
    document.getElementById("main_title2_w64_"+i).style.background="#fff";
	document.getElementById("product_class"+i).style.display="block";
}



//图片轮换
var k=1;
function ChangeImage(i)
{
    for(j=1;j<=5;j++)
    {
        document.getElementById("ads"+j).style.display="none";
        document.getElementById("btn"+j).style.background="#FFFFFF";
        document.getElementById("btn"+j).style.color="#FF9933";
    }
    document.getElementById("ads"+i).style.display="block";
    document.getElementById("btn"+i).style.background="#FF9933";
    document.getElementById("btn"+i).style.color="#FFFFFF";
}
function ChangeImage1()
{
    ChangeImage(k);
    k++;
    if(k>5)
    {
        k=1;
    }
    setTimeout("ChangeImage1()",3000);
}


function SearchMenu(i)
{
    for(j=1;j<=6;j++)
    {
        document.getElementById("searchmenu"+j).className="nav_imp1";
        form1.type.value=0;
    }
    document.getElementById("searchmenu"+i).className="nav_imp";
    form1.type.value=i;
}


function CleanKeyword()
{
    if(form1.keyword.value=="请输入关键词")
    {
        form1.keyword.value="";
        return false;
    }
    return false;
}

function PostKeyword()
{
    if(form1.keyword.value!="")
    {
        switch(form1.type.value)
        {
            case "1":
                window.open("http://news.cha.cc/search.aspx?keyword="+encodeURIComponent(form1.keyword.value));
                break;
            case "2":
                window.open("http://www.cha.cc/mall/index.html");
                break;
            case "3":
                window.open("http://biz.cha.cc/search.aspx?keyword="+encodeURIComponent(form1.keyword.value));
                break;
            case "4":
                window.open("http://114.cha.cc/search.aspx?keyword="+encodeURIComponent(form1.keyword.value));
                break;
            case "5":
                window.open("http://v.cha.cc/vedio_search.aspx?keyword="+encodeURIComponent(form1.keyword.value));
                break;
            case "6":
                window.open("http://photo.cha.cc/photolist.aspx?type=3&keyword="+encodeURIComponent(form1.keyword.value));
                break;
        }
    }
    return false;
}