function todisplay(id1,id2)
{
   document.getElementById(id1).style.display="";
   document.getElementById(id2).style.display = 'none'; 
}

function setHomepage()
{
   document.body.style.behavior='url(#default#homepage)';
   document.body.setHomePage('http://www.3521cn.com');
}

function addtoFavo(){
window.external.AddFavorite('http://www.3521cn.com','中国生物农药网');
}

function getElementsByClassName(divname,n) { 
    var el = [],
        _el = document.getElementById(divname).getElementsByTagName('div');
    for (var i=0; i<_el.length; i++ ) {
       if (_el[i].className == n ) {
           el[el.length] = _el[i];
        }
    }
    return el;
}
function searchmenuon(id)
{
    var menuon=getElementsByClassName('search','menuon');
    
    menuon[0].className = 'menu3';
    str="document.getElementById('searchmenu"+id+"').className='menuon'";

	if(id==1)
	{
      document.formsearch.subm.value="搜索 产品";
      document.formsearch.classname.value="产品";
      
	}
	else if(id==2)
	{
      document.formsearch.subm.value="搜索 求购";
      document.formsearch.classname.value="求购";
	}
	else if(id==3)
	{
      document.formsearch.subm.value="搜索 供应";
      document.formsearch.classname.value="供应";
	}
	else if(id==4)
	{
      document.formsearch.subm.value="搜索 企业";
      document.formsearch.classname.value="企业";
	}
	else if(id==5)
	{
      document.formsearch.subm.value="搜索 价格";
      document.formsearch.classname.value="价格";
	}
	else if(id==6)
	{
      document.formsearch.subm.value="搜索 展会";
      document.formsearch.classname.value="展会";
	}
	else if(id==7)
	{
      document.formsearch.subm.value="搜索 招商";
      document.formsearch.classname.value="招商";
	}
	else if(id==8)
	{
      document.formsearch.subm.value="搜索 资讯";
      document.formsearch.classname.value="资讯";
	}
    eval(str);
}
function searchclick()
{
	if(document.formsearch.names.value=="请输入您要查询的产品关键字"){
	alert("请输入关键字");
	return false;
	}
	document.formsearch.action="../search/SearchListPro.aspx?text="+document.formsearch.names.value+"&classname="+document.formsearch.classname.value;
}