function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_nbGroup(event, grpName) { //v6.0
  var i,img,nbArr,args=MM_nbGroup.arguments;
  if (event == "init" && args.length > 2) {
    if ((img = MM_findObj(args[2])) != null && !img.MM_init) {
      img.MM_init = true; img.MM_up = args[3]; img.MM_dn = img.src;
      if ((nbArr = document[grpName]) == null) nbArr = document[grpName] = new Array();
      nbArr[nbArr.length] = img;
      for (i=4; i < args.length-1; i+=2) if ((img = MM_findObj(args[i])) != null) {
        if (!img.MM_up) img.MM_up = img.src;
        img.src = img.MM_dn = args[i+1];
        nbArr[nbArr.length] = img;
    } }
  } else if (event == "over") {
    document.MM_nbOver = nbArr = new Array();
    for (i=1; i < args.length-1; i+=3) if ((img = MM_findObj(args[i])) != null) {
      if (!img.MM_up) img.MM_up = img.src;
      img.src = (img.MM_dn && args[i+2]) ? args[i+2] : ((args[i+1])? args[i+1] : img.MM_up);
      nbArr[nbArr.length] = img;
    }
  } else if (event == "out" ) {
    for (i=0; i < document.MM_nbOver.length; i++) {
      img = document.MM_nbOver[i]; img.src = (img.MM_dn) ? img.MM_dn : img.MM_up; }
  } else if (event == "down") {
    nbArr = document[grpName];
    if (nbArr)
      for (i=0; i < nbArr.length; i++) { img=nbArr[i]; img.src = img.MM_up; img.MM_dn = 0; }
    document[grpName] = nbArr = new Array();
    for (i=2; i < args.length-1; i+=2) if ((img = MM_findObj(args[i])) != null) {
      if (!img.MM_up) img.MM_up = img.src;
      img.src = img.MM_dn = (args[i+1])? args[i+1] : img.MM_up;
      nbArr[nbArr.length] = img;
  } }
}



function showErrMsg(id,msg) {
	alert(msg);
	document.getElementById(id).focus();
	return false;
}

function trim(stringObj) {
	return(ltrim(rtrim(stringObj)));  
}

function rtrim(stringObj) {
	while (stringObj.charCodeAt(stringObj.length - 1) == 32) {
		stringObj = stringObj.substring(0,stringObj.length - 1);
	}
	return stringObj;
}

function ltrim(stringObj) {
	while (stringObj.charCodeAt(0) == 32) {  
		stringObj = stringObj.substring(1,stringObj.length);  
	}  
	return stringObj;  
}

function GetCookie(name) {
	  var dc = document.cookie;
	  var prefix = name + "=";
	  var begin = dc.indexOf("; " + prefix);
	  if (begin == -1) {
	    begin = dc.indexOf(prefix);
	    if (begin != 0) return null;
	   }
	   else {
	     begin += 2;
	   }
	  var end = document.cookie.indexOf(";", begin);
	  if (end == -1)
	    end = dc.length;
	  return unescape(dc.substring(begin + prefix.length, end));  
	}

function SetCookie(name, value, expires, path, secure) {
  var today = new Date();
  today.setTime(today.getTime());
  if (expires) {
    expires = expires * 1000 * 60;
  }
  var expires_date = new Date(today.getTime()+(expires));
  var domain = "localhost:8080";
  document.cookie = name + "=" + escape(value) + 
  ((expires)? ";expires=" + expires_date.toGMTString() : "") + 
  ((path)   ? ";path=" + path : "" ) + 
  ((secure) ? ";secure" : "" );
}


function checkEmail (str) {
	isEmail1=/^\w+([\.\-]\w+)*\@\w+([\.\-]\w+)*\.\w+$/;
	isEmail2=/^.*@[^_]*$/;
	return (isEmail1.test(str)&&isEmail2.test(str));
}


function chkSearchBox() {
	var val= $("#searchBox").val();
	if(val=='输入你想要的关键词' || val=='') {
		alert("请输入有效的关键词");
		return false;
	}else{
		return true;
	}
}