function $()
{
	var el = arguments[0];
	if(typeof el == "string")
	{
		return document.getElementById(el);
	}
	return el;
}
function myescape()
{
	return escape(arguments[0]).replace(/\+/ig, '%2B');
}
 function opwin(keywords,type)
 { 
	window.open("http://sosu.qidian.com/search.aspx?k="+myescape(keywords)+"&t="+type); 
 }

 function go()
 {
	var key = $("txtwords").value.trim();
	var type= $("searchtype").value; 
	if(!key)
	{
		alert("请输入搜索关键字"); 
		return false;
	}
	else 
		if(type.indexOf('ft') != -1 && key.length < 2) 
		{
			 alert("请输入2个或以上字符");
			 return;
		} 
	opwin(key,type);
 }

 (function(){
	///图书简介字数调整
	if ( document.addEventListener ) 
	{
		document.addEventListener(
										"DOMContentLoaded", 
										function() 
										{
											var dd_table = $("books").getElementsByTagName("dd");
											for(var i = 0, length = dd_table.length; i < length; i++)
											{
												dd_table[i].innerHTML = dd_table[i].innerHTML.cutString(180);
											}
										}, 
										false 
								);
	} 
	else
	{
		document.attachEvent(
								"onreadystatechange", function() 
								{
									if ( document.readyState === "complete" ) 
									{
											var dd_table = $("books").getElementsByTagName("dd");
											for(var i = 0, length = dd_table.length; i < length; i++)
											{
												dd_table[i].innerHTML = dd_table[i].innerHTML.cutString(180);

											}
									}
								}
							);
	};
	})();