var objheight,sett,setot,nnn;

function shownode(NodeID){
var obj;
	obj=document.getElementById("node"+NodeID)
	if(obj.style.display == 'none'){
		obj.style.display = '';
	}else{
		obj.style.display = 'none';
	}
}

function hidenode(NodeID){
var checkobj;
	checkobj=eval("document.getElementById('"+NodeID+"')");
	if(checkobj!=null)checkobj.style.visibility = 'hidden';	
}

function openwindow(url,name,iWidth,iHeight)
 {
  var url;                                 //转向网页的地址;
  var name;                           //网页名称，可为空;
  var iWidth;                          //弹出窗口的宽度;
  var iHeight;                        //弹出窗口的高度;
  var iTop = (window.screen.availHeight-30-iHeight)/2;       //获得窗口的垂直位置;
  var iLeft = (window.screen.availWidth-10-iWidth)/2;           //获得窗口的水平位置;
  window.open(url,name,'height='+iHeight+',,innerHeight='+iHeight+',width='+iWidth+',innerWidth='+iWidth+',top='+iTop+',left='+iLeft+',toolbar=no,menubar=no,scrollbars=auto,resizeable=no,location=no,status=no');
 }

function sethome(){
this.homepage.style.behavior='url(#default#homepage)';this.homepage.sethomepage("http://"+document.domain);
}

function checkform(){
var i
var errtxt1=arguments[0];
var errtxt2=arguments[1];
var errtxt3=arguments[2];
		for(i=3;i<arguments.length;i++){
				//alert(objname+e);
				checkobj=document.getElementById(arguments[i]);
				if(checkobj){
					switch (arguments[i]){
					case "mail":
						if (checkspace(checkobj.value)){alert(errtxt1+checkobj.title+"!!");checkobj.focus();return false;}
						if (checkmail(checkobj)==false){alert(errtxt2+checkobj.title+errtxt3+"!!");checkobj.focus();return false;};
						break;
					case "UserName"	:
						if(isPasswd(checkobj.value)==false){
							alert(errtxt2+checkobj.title+'！\n只有输入5-20个用字母开头，可以包括数字,"_","-"');
							checkobj.focus();
							return false;
							}
						break;
					case "Password"	:
						if(isPasswd(checkobj.value)==false){
							alert(errtxt2+checkobj.title+'！\n只能输入6-20个字母、数字、下划线');
							checkobj.focus();
							return false;
							}
						break;
					case "Password1"	:
						if(isPasswd(checkobj.value)==false){
							alert(errtxt2+checkobj.title+'！\n只能输入6-20个字母、数字、下划线');
							checkobj.focus();
							return false;
							}
						break;
					case "PwdConfirm"	:
						if(checkobj.value!=document.getElementById('Password1').value){
							alert('输入密码两次不一致！');
							checkobj.focus();
							return false;
							}
						break;
					}
					if (checkspace(checkobj.value)){alert(errtxt1+checkobj.title+"!!");checkobj.focus();return false;}
				}
		}
//document.getElementById("mailcontent").value=document.getElementById("sendfrom").innerHTML;
}

function checkmail(mailobj,errtxt){
	if (mailobj){
		var re = new RegExp("^([A-Za-z0-9_|-]+[.]*[A-Za-z0-9_|-]+)+@[A-Za-z0-9|-]+([.][A-Za-z0-9|-]+)*[.][A-Za-z0-9]+$","ig");
		{if (!re.test(mailobj.value))
			{
			mailobj.focus();
			return false;
			}
		}
	}
}

function checkspace(checkstr) {
  var str = '';
  for(i = 0; i < checkstr.length; i++) {
    str = str + ' ';
  }
  return (str == checkstr);
}

function checkspace(checkstr) {
  var str = '';
  for(i = 0; i < checkstr.length; i++) {
    str = str + ' ';
  }
  return (str == checkstr);
}

function isRegisterUserName(s)//只有输入5-20个用字母开头，可以包括数字,"_","-"
{
var patrn=/^[a-zA-Z]{1}([a-zA-Z0-9._]){4,19}$/;
if (!patrn.exec(s)) return false
return true
}

function isPasswd(s) //只能输入6-20个字母、数字、下划线
{
var patrn=/^[a-zA-Z0-9]{6,15}$/;
if (!patrn.exec(s)) return false
return true
}

function showobj(objid){
	var obj1,obj2;
	for(var i=1;i<4;i++){
		obj1 = document.getElementById('newslist'+i);
		obj2 = document.getElementById('cat'+i);
		if(obj2!=null){
			if(i==objid){
				obj2.className = "on";
				obj1.className = "caselist2";
				document.getElementById('linknews').href=obj2.href;
			}else{
				obj2.className = "";
				obj1.className = "nonediv";
			}
		}
	}
}