var activeTree = "";
var activeTree_1 = "";
var  activeTree_2  =  "";
var  activeTree_3  =  "";

function expandTree(treeName) {
	if (treeName == "") return;
	var treeButton = eval(treeName + "button");
	
	var treesub = eval(treeName + "sub");
	if (treesub.style.display == "none") {
		expandTree(activeTree);  //这里是再次用这个函数来使以前出来的菜单隐藏，即每次只有一个菜单显示。

		treesub.style.display = "";   
		treeButton.src = "images/arrow1.gif";//display共有四个属性值：block,inline,list-item,none;如果不是none,那么默认为显示.(在下面的display中定义)
		activeTree = treeName;
	} else {
		treeButton.src = "images/arrow.gif";
		treesub.style.display = "none";
		activeTree = "";
	}
}

function expandTree_1(treeName_1) {
	if (treeName_1 == "") return;
	var treesub_1 = eval(treeName_1 + "sub");
	if (treesub_1.style.display == "none") {
		expandTree_1(activeTree_1);  //这里是再次用这个函数来使以前出来的菜单隐藏，即每次只有一个菜单显示。

		treesub_1.style.display = "";   
		activeTree_1 = treeName_1;
	} else {
		treesub_1.style.display = "none";
		activeTree_1 = "";
	}
}

function expandTree_2(treeName_2) {
	if (treeName_2 == "") return;
	var treeButton_2 = eval(treeName_2 + "button");
	
	var treesub_2 = eval(treeName_2 + "sub");
	if (treesub_2.style.display == "none") {
		expandTree_2(activeTree_2);  //这里是再次用这个函数来使以前出来的菜单隐藏，即每次只有一个菜单显示。

		treesub_2.style.display = "";   
		treeButton_2.src = "images/" + treeName_2 +"_on.gif"  ;//display共有四个属性值：block,inline,list-item,none;如果不是none,那么默认为显示.(在下面的display中定义)
		activeTree_2 = treeName_2;
	} else {
		treeButton_2.src = "images/" + treeName_2 +".gif" ;
		treesub_2.style.display = "none";
		activeTree_2 = "";
	}
}



function check() {
if( form.sel_text.value.length<1 ) 
{
alert("请输入查询关键字!");
return false;
}
}

function expandTree_3(treeName_3) {
	if (treeName_3 == "") return;
	var treeButton_3 = eval(treeName_3 + "button");
	
	var treesub_3 = eval(treeName_3 + "sub");
	if (treesub_3.style.display == "none") {
		expandTree_3(activeTree_3);  //这里是再次用这个函数来使以前出来的菜单隐藏，即每次只有一个菜单显示。

		treesub_3.style.display = "";   
		treeButton_3.src = "images/Ty_on.gif"  ;//display共有四个属性值：block,inline,list-item,none;如果不是none,那么默认为显示.(在下面的display中定义)
		activeTree_3 = treeName_3;
	} else {
		treeButton_3.src = "images/Ty.gif" ;
		treesub_3.style.display = "none";
		activeTree_3 = "";
	}
}