var user_name='';
var gid='';
function showBG()
{
	var x = $$('bg');
	x.style.display = 'block';
	x.style.width = document.body.scrollWidth + 20 + 'px';
	x.style.height = document.body.scrollHeight + 20 + 'px';
	x.style.filter='alpha(opacity=40)';	
	x.style.opacity = "0.4"; //For FireFOx
}
function showBGDiv(id)
{
	showBG();
	var y = $$(id);
	y.style.display = 'block';	
	y.style.left=(document.body.clientWidth/2-y.clientWidth/2)+"px";
	y.style.top = getScrollXY()+"px";
} 
function getScrollXY() {
    var scrOfX = 0, scrOfY = 0;
    if (typeof( window.pageYOffset ) == 'number') {
        //Netscape compliant
        scrOfY = window.pageYOffset;
    } else if (document.body && ( document.body.scrollLeft || document.body.scrollTop )) {
        //DOM compliant
        scrOfY = document.body.scrollTop;
    } else if (document.documentElement && ( document.documentElement.scrollLeft || document.documentElement.scrollTop )) {
        //IE6 standards compliant mode
        scrOfY = document.documentElement.scrollTop;
    }
    return scrOfY+220;
}
function showBGDiv2(id)
{
	showBG();
	var y = $$(id);
	y.style.display = 'block';	
	y.style.left=(document.body.clientWidth/2-y.clientWidth/2)+"px";
	y.style.top=300+'px';
}
function addFriend(uid,user_id) {
	if(!uid) {
		location.href='/login.php?forward=/index.php';		
		return;
	} else {
		if(uid == user_id) {
			alert('不能加自己为好友');
			return;
		} else {			
			showBGDiv('add_friend');
			getinfo('add_friend_result','/blog/ajax_receive.php?uid='+uid+'&user_id='+user_id+'&type=friend');
		}
	}
}
function showFriend(id) {
	window.open('/blog/friend_admin.php?user_id='+id);
	return;
}
function sayHello(id,uname) {
	if(!id)	{
		location.href='/login.php?forward=/index.php';
		return;
	} else {
		user_name = uname;
		showBGDiv('say_hello');
		$$('say_hello_result').innerHTML = '';
		$$('mtitle').value = '';
		$$('mcontent').value = '';
		$$('mtitle').focus();
	}
}
function postMessage() {	  
	var mtitle = $$('mtitle').value;
	var mcontent = $$('mcontent').value;
	if(!mcontent)	{
		alert('请输入您的问候语');
		$$('mcontent').focus();
		return;
	} else {
		postinfo('say_hello_result','/blog/ajax_receive.php','to='+user_name+'&title='+mtitle+'&content='+mcontent+'&type=send_message');	
  }
}
function addMember(id,group_id,join_type) {
	if(!id)	{
		location.href='/login.php?forward=/group/mygroup.php?id='+group_id;
		return;
	} else if(join_type == 1 ) {	    
		showBGDiv2('add_member2');
		getinfo('add_member_result2','/blog/ajax_receive.php?group_id='+group_id+'&join_type=1&type=add_member');
	} else if(join_type == 2) {
		gid = group_id;		
		showBGDiv2('add_member');
		$$('add_member_result').innerHTML = '';
		$$('mcontent2').value = '';
		$$('group_id').value = group_id;
		$$('mcontent2').focus();
	}
}
function postGroup() {
	var mcontent2 = $$('mcontent2').value;
	if(!mcontent2)	{
		alert('请输入您的验证信息');
		$$('mcontent2').focus();
		return;
	}	else {
		postinfo('add_member_result','/blog/ajax_receive.php','group_id='+gid+'&content='+mcontent2+'&join_type=2&type=add_member');	
  }
}
function closeDiv() {
	$$('bg').style.display = 'none';
	if($$('add_friend').style.display == 'block')
		$$('add_friend').style.display = 'none';
	if($$('say_hello').style.display == 'block')
		$$('say_hello').style.display = 'none';
	if($$('add_member').style.display == 'block')
	    $$('add_member').style.display = 'none';
	if($$('add_member2').style.display == 'block')
		$$('add_member2').style.display = 'none';
	return;
}
function $$(id)
{
	return document.getElementById(id);
}