function articleSearch(frm){
	var wd = frm.txtWd.value.Trim();
	if(wd==""||wd=="请输入关键字"){
		alert("请输入搜索关键字！");
		frm.txtWd.focus();
		return;
	}
	
 	var _form = document.createElement("form"); 
    _form.action="../news/search.php"; 
    _form.method="get";
    _form.target="_blank";
    
    document.body.appendChild(_form);
    
    var txtWd = document.createElement("input"); 
    txtWd.type="hidden"; 
    txtWd.name="wd"; 
    txtWd.value=escape(wd); 

    _form.appendChild(txtWd);
    _form.submit(); 
}