var VerticalPOS;
var picturePOS;
var dragObj = new Object();
var mouseclicked=true;

function test() {
randomnumber=Math.floor(Math.random()*301);
alert(randomnumber);
return;
}
function closeNewUserNotification() {
	document.getElementById("newusernotification2").style.visibility = 'hidden';
}
function showimage() {
	if (!document.images)
		return;
	document.images.avatar.src= 'images/avatar/' + document.Register.user_avatar.options[document.Register.user_avatar.selectedIndex].value;
}

function showPicture(pic) {
	VerticalPOS=0;
	picturePOS=0;
	if(window.pageYOffset){VerticalPOS=window.pageYOffset}else if(document.documentElement && document.documentElement.scrollTop){VerticalPOS=document.documentElement.scrollTop}else if(document.body){VerticalPOS=document.body.scrollTop}
	VerticalPOS = VerticalPOS + 2;
	document.getElementById("pictureholder").innerHTML="<div id=picturelayer style=\"position:absolute; left:2; border:#993333 2px solid; background-color:#FFFFCC \">µã»÷ͼƬ¹Ø±Õ<br><img src=\""+pic+"\" alt=\"Í϶¯Í¼Æ¬\" title=\"Í϶¯Í¼Æ¬\" style=\"cursor:pointer\" onclick=\"closePicture();\" onmousedown=\"dragStart(event,'picturelayer');\"/></div>"
	throwPicture();
}

function throwPicture() {
	if ( (picturePOS+1) < VerticalPOS ) {
		picturePOS = VerticalPOS - (VerticalPOS - picturePOS)/2;
		document.getElementById("picturelayer").style.top=picturePOS+"px";
		setTimeout("throwPicture()",180);
	} else {
		document.getElementById("picturelayer").style.top=VerticalPOS+"px";
		return;
	}
}

function closePicture() {
	if ( mouseclicked )
		document.getElementById("pictureholder").innerHTML="<div id=\"pictureholder\"></div>";
}

function Browser() {
	var ua, s, i;
	this.isIE    = false;
	this.isNS    = false;
	this.version = null;
	ua = navigator.userAgent;
	s = "MSIE";
	if ((i = ua.indexOf(s)) >= 0) {
		this.isIE = true;
		this.version = parseFloat(ua.substr(i + s.length));
		return;
	}
	s = "Netscape6/";
	if ((i = ua.indexOf(s)) >= 0) {
		this.isNS = true;
		this.version = parseFloat(ua.substr(i + s.length));
		return;
	}
	// Treat any other "Gecko" browser as NS 6.1.
	s = "Gecko";
	if ((i = ua.indexOf(s)) >= 0) {
		this.isNS = true;
		this.version = 6.1;
		return;
	}
}
var browser = new Browser();

function dragStart(event, id) {
	var el, x, y;
	mouseclicked = true;
	if (id) dragObj.elNode = document.getElementById(id);
	else {
		if (browser.isIE) dragObj.elNode = window.event.srcElement;
		if (browser.isNS) dragObj.elNode = event.target;
		if (dragObj.elNode.nodeType == 3) dragObj.elNode = dragObj.elNode.parentNode; // If text node, use its parent
	}
	// Get cursor position with respect to the page
	if (browser.isIE) {
		x = window.event.clientX + document.documentElement.scrollLeft + document.body.scrollLeft;
		y = window.event.clientY + document.documentElement.scrollTop + document.body.scrollTop;
	} else if (browser.isNS) {
		x = event.clientX + window.scrollX;
		y = event.clientY + window.scrollY;
	}
	// Save starting positions of cursor and element.
	dragObj.cursorStartX = x;
	dragObj.cursorStartY = y;
	dragObj.elStartLeft  = parseInt(dragObj.elNode.style.left, 10);
	dragObj.elStartTop   = parseInt(dragObj.elNode.style.top,  10);

	if (isNaN(dragObj.elStartLeft)) dragObj.elStartLeft = 0;
	if (isNaN(dragObj.elStartTop))  dragObj.elStartTop  = 0;
	// Capture mousemove and mouseup events on the page.
	if (browser.isIE) {
		document.attachEvent("onmousemove", dragGo);
		document.attachEvent("onmouseup",   dragStop);
		window.event.cancelBubble = true;
		window.event.returnValue = false;
	} else if (browser.isNS) {
		document.addEventListener("mousemove", dragGo,   true);
		document.addEventListener("mouseup",   dragStop, true);
		event.preventDefault();
	}
}

function dragGo(event) {
	var x, y;
	mouseclicked = false;
	// Get cursor position with respect to the page.
	if (browser.isIE) {
		x = window.event.clientX + document.documentElement.scrollLeft + document.body.scrollLeft;
		y = window.event.clientY + document.documentElement.scrollTop + document.body.scrollTop;
	} else if (browser.isNS) {
		x = event.clientX + window.scrollX;
		y = event.clientY + window.scrollY;
	}
	// Move drag element by the same amount the cursor has moved.
	dragObj.elNode.style.left = (dragObj.elStartLeft + x - dragObj.cursorStartX) + "px";
	dragObj.elNode.style.top  = (dragObj.elStartTop  + y - dragObj.cursorStartY) + "px";
	if (browser.isIE) {
		window.event.cancelBubble = true;
		window.event.returnValue = false;
	} else if (browser.isNS)       event.preventDefault();
}

function dragStop(event) {
	// Stop capturing mousemove and mouseup events.
	if (browser.isIE) {
		document.detachEvent("onmousemove", dragGo);
		document.detachEvent("onmouseup",   dragStop);
	} else if (browser.isNS) {
		document.removeEventListener("mousemove", dragGo,   true);
		document.removeEventListener("mouseup",   dragStop, true);
	}
}