//检验搜索表单的合法性
function search(){
	if (document.formsearch.sKey.value == "请输入关键字") {
		alert("\请输入关键字！");
		document.formsearch.sKey.focus();
		return false;
	}
else if (document.formsearch.sKey.value == "") {
		alert("\请输入关键字！");
		document.formsearch.sKey.focus();
		return false;
	}
}