jQuery.fn.jqSearch = function(options){  
	var defaults = {
		TxtVal:"输入关键词搜索！",
		KeyTxt1:"输入关键词搜索！",
		KeyTxt2:"输入的关键词字数不要过多！",
		KeyTxt3:"您输入的内容存在特殊字符！",
		KeyId:"topkey",
		KeyUrl:"#",
		KeyHref:"key",
		Static:false
	};  
    var opts = jQuery.extend(defaults,options);
	
    return this.each(function(){
		_this=jQuery(this);
		
		$("#"+opts.KeyId).val(opts.TxtVal)
		$("#"+opts.KeyId).focus(function(){
			if($(this).val()==opts.TxtVal){
				$(this).val("");
			}
		});
		$("#"+opts.KeyId).blur(function(){
			if($(this).val()==""){
				$(this).val(opts.TxtVal);
			}
		});
		function GoSearchUrl() {
			var searchinput = document.getElementById(opts.KeyId);
			if (searchinput.value == ""||searchinput.value == opts.TxtVal){
				alert(opts.KeyTxt1);
				searchinput.focus();
				return false;
			}
			if (searchinput.value.length > 50) {
				alert(opts.KeyTxt2);
				searchinput.focus();
				return false;
			}
			var pattern = new RegExp("[`~!@#$^&*()=|{}':;',\\[\\].<>/?~！@#￥……&*（）—|{}【】‘；：”“'。，、？]");
			if(pattern.test(searchinput.value)){
				alert(opts.KeyTxt3);
				searchinput.focus();
				return false;
			}
			if(opts.Static){
				//静态
				Staticlinks =opts.KeyUrl;
				//+"?"+opts.KeyHref+"="
				Staticurl="_"+opts.KeyHref+"_" + searchinput.value + ".html"
				Staticlinks = Staticlinks.replace(".html", Staticurl);
				window.location =Staticlinks;
			}else{
				//动态
				window.location = opts.KeyUrl+"?"+opts.KeyHref+"=" + escape(searchinput.value);
			}

			return true;
		}
	
		function entersearch(){
			var event = window.event || arguments.callee.caller.arguments[0];
			if (event.keyCode == 13){
				GoSearchUrl();
			}
		}
	
		function checkComments() {
			var event = window.event || arguments.callee.caller.arguments[0];
			if (( event.keyCode > 32 && event.keyCode < 48) || ( event.keyCode > 57 && event.keyCode < 65) || ( event.keyCode > 90 && event.keyCode < 97)){ 
			event.returnValue = false; 
			} 
		}
	
		function stripscript(s) {
			var pattern = new RegExp("[`~!@#$^&*()=|{}':;',\\[\\].<>/?~！@#￥……&*（）&mdash;—|{}【】‘；：”“'。，、？]");
			var rs = "";
			for (var i = 0; i < s.length; i++) {
				rs = rs + s.substr(i, 1).replace(pattern,'');
			}
			return rs;
		}
		
		_this.click(function(){
			GoSearchUrl()
		});
		
		$("#"+opts.KeyId).keydown(function(){
			entersearch()
		});
	})
	
}