var qsearch_prompt = "搜索用户";
var qsearch_error = "输入查询内容";
var qsearch_input = document.qsearch_form.svalue;
qsearch_input.value = qsearch_prompt;

function qsearch_submit() {
    var sc = qsearch_input.value;
    if (sc == qsearch_prompt || sc == '') {
		alert(qsearch_error);
		return false;
    }
	else {
		document.qsearch_form.submit();
		return true;
    }
}

function qsearch_focus() {
    if (qsearch_input.value == qsearch_prompt) {
		qsearch_input.value = '';
    }
}

function qsearch_blur() {
    if (qsearch_input.value == '') {
		qsearch_input.value = qsearch_prompt;
    }
}