function changeSearch(td_now,i) {
	var valueArray = ["","商机","产品","企业","资讯"];
	var keyArray = ["0","1","2","3","4"];
	//var oForm = document.getElementById("sForm");
	var btnSearch = document.getElementById("btnSearch");
	var type = document.getElementById("type")
	var q = document.getElementById("q");
	
	for (var j=0; j<keyArray.length; j++){
		var element = document.getElementById("td"+ keyArray[j] );
		element.className = "Item";
	}
	
	q.value = "请输入化工"+ valueArray[i]  +"关键字!"
	btnSearch.value = "搜索 化工" + valueArray[i] ;
	type.value = i;
	td_now.className="SelectedItme";
}
function mouse_on(td_now){
	if(td_now.className == "SelectedItme") return false;
	else td_now.className = "SelectedItme1";
}

function mouse_of(td_now){	
	if(td_now.className == "SelectedItme") return false;
	else td_now.className = "Item";
	//element.className = "Item";
}