function searchcheck(frm){
	if(frm.keyword.value==""){
		 alert("请输入关键字！");
		 frm.keyword.focus();
	     return false;
	}
	return true;
}
function editcheck(frm){
	
	 if(frm.password.value!=""){
	     if(frm.password.value.length<6 || frm.password.value.length>20){
	 	alert("请是输入6到20位之间的密码！");
	    frm.password.focus();
	     return false;
	 	}
	 }
	 
	  if(frm.email.value==""){
	     alert("邮箱不能为空！");
	    frm.email.focus();
	     return false;
     }else if(!isEmail(frm.email.value)){
		 alert("邮箱格式不正确！");
	    frm.email.focus();
	     return false;
	 }
	 if(frm.name.value==""){
	     alert("姓名不能为空！");
	    frm.name.focus();
	     return false;
     }

}
function regcheck(frm){
	if(frm.username.value==""){
	     alert("用户名不能为空！");
	    frm.username.focus();
	     return false;
     }else if(frm.username.value.length<6 || frm.username.value.length>20){
	 	alert("请是输入6到20位之间的用户名！");
	    frm.username.focus();
	     return false;
	 }
	 if(frm.password.value==""){
	     alert("密码不能为空！");
	    frm.password.focus();
	     return false;
     }else if(frm.password.value.length<6 || frm.password.value.length>20){
	 	alert("请是输入6到20位之间的密码！");
	    frm.password.focus();
	     return false;
	 }
	  if(frm.password2.value==""){
	     alert("确认密码不能为空！");
	    frm.password2.focus();
	     return false;
     }
	  if(frm.password.value!=frm.password2.value){
	     alert("密码不相同，请确认！");
	    frm.password2.focus();
	     return false;
     }
	 
	  if(frm.email.value==""){
	     alert("邮箱不能为空！");
	    frm.email.focus();
	     return false;
     }else if(!isEmail(frm.email.value)){
		 alert("邮箱格式不正确！");
	    frm.email.focus();
	     return false;
	 }
	 if(frm.name.value==""){
	     alert("姓名不能为空！");
	    frm.name.focus();
	     return false;
     }

}
function isEmail(strEmail) {
if(strEmail.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/) != -1)
return true;
else
return false;
}
function logincheck(frm){
	if(frm.username.value==''){
		alert("请输入用户名！");
		frm.username.focus();
		return false;
	}
	if(frm.password.value==''){
		alert("请输入密码！");
		frm.password.focus();
		return false;
	}
	return true;
}

function isMatch(str1,str2) 
{  
var index = str1.indexOf(str2); 
if(index==-1) return false; 
return true; 
} 

function ResumeError() { 
return true; 
} 
window.onerror = ResumeError; 

function $(id) {
    return document.getElementById(id);
}
// 相对尺寸

function showMenu (baseID, divID) {
    baseID = $(baseID);
    divID  = $(divID);

    //var l = GetOffsetLeft(baseID);
    //var t = GetOffsetTop(baseID);

    //divID.style.left = l + 'px';
//    divID.style.top = t + baseID.offsetHeight + 'px';
    if (showMenu.timer) clearTimeout(showMenu.timer);
	hideCur();
	$("subnav1").style.display = 'none';
	$("subnav2").style.display = 'none';
	$("subnav3").style.display = 'none';
    divID.style.display = 'block';
	showMenu.cur = divID;

    if (! divID.isCreate) {
        divID.isCreate = true;
        //divID.timer = 0;
        divID.onmouseover = function () {
            if (showMenu.timer) clearTimeout(showMenu.timer);
			hideCur();
            divID.style.display = 'block';
        };

        function hide () {
            showMenu.timer = setTimeout(function () {divID.style.display = 'none';}, 50);
        }

        divID.onmouseout = hide;
        baseID.onmouseout = hide;
    }
	function hideCur () {
		showMenu.cur && (showMenu.cur.style.display = 'none');
	}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}
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_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}