var message = "请输入您感兴趣的信息";
var peleseChoose = "对不起，您至少选中一个选项！";

//浏览器版本检测提示
//version();

/**
 * 搜索分类
 */
function selectSearchPart() {
  	var ddl = document.getElementById("searchPart");
  	var index = ddl.selectedIndex;
  	var value = ddl.options[index].value;
	document.searchForm.action = value;
}

/**
 * 验证搜索表单
 */
function validateSearchForm(form) {
	if(form.searchKeywords.value.substring(0,3)=='请输入') {
		alert(message);
		return false;		
	}
	if(form.searchKeywords.value=='') {
		alert(message);
		return false;		
	}
	return true;
}

/**
 * 验证搜索表单
 */
function validateAdvanceSearchForm(form) {
	if(form.searchKeywords.value.substring(0,3)=='请输入') {
		alert(message);
		return false;		
	}
	if(form.searchKeywords.value=='') {
		alert(message);
		return false;		
	}	
	return true;
}

/**
 * 验证搜索表单
 */
function validateAdvanceSearchFormForBuying(form) {
	if(form.searchKeywords.value.substring(0,3)=='请输入') {
		alert(message);
		return false;		
	}
	return true;
}


/**
 * 验证搜索表单(帮助)
 */
function validateHelpSearchForm(form) {
	if(form.searchKeywords.value.substring(0,3)=='请输入') {
		alert(message);
		return false;
	}
	if(form.searchKeywords.value=='') {
		alert(message);
		return false;		
	}
	return true;
}

/**
 * 验证搜索表单(帮助)
 */
function validateHelpSearchFormForSelling(form) {
	if(form.searchKeywords.value.substring(0,3)=='请输入') {
		alert(message);
		return false;
	}
	return true;
}


/**
 * 验证表单
 */
function validateFormForTodayNews(form) {
	if(form.searchKeywords.value.substring(0,3)=='请输入') {
		alert(message);
		return false;
	}
	return true;
}

/**
 * 更多>>
 */
function showSingle() {
	getElementByID("single_sort").style.display = "block";
	getElementByID("more_sort").style.display = "none";
}

/**
 * 简洁显示>>
 */
function showMore() {
	getElementByID("single_sort").style.display = "none";
	getElementByID("more_sort").style.display = "block";
}

/**
 * 更多>>
 */
function showSingle2() {
	getElementByID("single_sort2").style.display = "block";
	getElementByID("more_sort2").style.display = "none";
}

/**
 * 简洁显示>>
 */
function showMore2() {
	getElementByID("single_sort2").style.display = "none";
	getElementByID("more_sort2").style.display = "block";
}