function selectTag(showContent,selfObj){
	// ²Ù×÷±êÇ©
	var tag = document.getElementById("tags").getElementsByTagName("li");
	var taglength = tag.length;
	for(i=0; i<taglength; i++){
		tag[i].className = "";
	}
	selfObj.parentNode.className = "selectTag";
	// ²Ù×÷ÄÚÈÝ
	for(i=0; j=document.getElementById("tagContent"+i); i++){
		j.style.display = "none";
	}
	document.getElementById(showContent).style.display = "block";
	//alert(showContent);
	
	
	
	if (showContent=="tagContent0")
	 {
	  document.form_top.action="product_list.asp";
	  //alert("1");
	 }
	else if (showContent=="tagContent1")
	 {
	  document.form_top.action="buy_list.asp";
	  //alert("2");
	 }
	else if (showContent=="tagContent2")
	 {
	  document.form_top.action="sell_list.asp";
	 // alert("3");
	 }
	else if (showContent=="tagContent3")
	 {
	  document.form_top.action="company_list.asp";
	 }
	else if (showContent=="tagContent4")
	 {
	  document.form_top.action="info_list.asp";
	 }
	 
}