function shownode(NodeID){
var checkobj;
	checkobj=eval("document.getElementById('node"+NodeID+"')");
	if(checkobj!=null){
	if(checkobj.style.display == 'none'){
		checkobj.style.display = '';
	}else{checkobj.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=eval("document.getElementById('"+arguments[i]+"')");
				if(checkobj){
				if (arguments[i]=="mail"){
					if (checkspace(checkobj.value)){alert(errtxt1+checkobj.title+"!!");checkobj.focus();return false;}
					if (checkmail(checkobj)==false){alert(errtxt2+checkobj.title+errtxt3+"!!");return false;};
				}else if (arguments[i]=="phone"){
					if (checkspace(checkobj.value)){alert(errtxt1+checkobj.title+"!!");checkobj.focus();return false;}
					if (isTel(checkobj.value)==false){alert(errtxt2+checkobj.title+errtxt3+"!!");return false;};
				}else{
				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 isTel(str){
       var reg=/^([0-9]|[\-])+$/g ;
       if(str.length<7 || str.length>18){
        return false;
       }
       else{
         return reg.exec(str);
       }
}

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

function showobj(objid){
	var obj,obj2;
	for(var i=1;i<6;i++){
		obj = document.getElementById('newslist'+i);
		obj2 = document.getElementById('cat'+i);
		//alert(obj+"\n"+'newslist'+i);
		if(obj!=null){
			if(i==objid){
				obj2.className = "newon";
				obj.className = "caselist2";
			}else{
				obj2.className = "";
				obj.className = "nonediv";
			}
		}
}
}