/******************************************************************************


  Crossday Discuz! Board - Floating Advertisements for Discuz!


  Copyright 2001-2006 Comsenz Inc. (http://www.comsenz.com)


*******************************************************************************/





var delta=0.15;


var collection;


var closeB=false;


function floaters() {


	this.items = [];


	this.addItem = function(id,x,y,content)	{


		document.write('<div id=' + id + ' style="z-index: 10; position: absolute; width:' + (document.body.clientWidth - (typeof(x) == 'string' ? eval(x) : x)*2) + 'px; left:' + (typeof(x) == 'string' ? eval(x) : x) + ';top:' + (typeof(y) == 'string'? eval(y) : y) + '">' + content + '</div>');


		var newItem = {};


		newItem.object = document.getElementById(id);


		newItem.x = x;


		newItem.y = y;


		this.items[this.items.length] = newItem;


	}


	this.play = function() {


		collection = this.items;


		setInterval('play()',30);


	}


}


function play() {


	if(screen.width <= 800 || closeB) {


		for(var i = 0;i < collection.length;i++) {


			collection[i].object.style.display = 'none';


		}


		return;


	}


	for(var i = 0;i < collection.length;i++) {


		var followObj = collection[i].object;


		var followObj_x = (typeof(collection[i].x) == 'string' ? eval(collection[i].x) : collection[i].x);


		var followObj_y = (typeof(collection[i].y) == 'string' ? eval(collection[i].y) : collection[i].y);


		if(followObj.offsetLeft != (document.body.scrollLeft + followObj_x)) {


			var dx = (document.body.scrollLeft + followObj_x - followObj.offsetLeft) * delta;


			dx = (dx > 0 ? 1 : -1) * Math.ceil(Math.abs(dx));


			followObj.style.left = followObj.offsetLeft + dx;


		}


		if(followObj.offsetTop != (document.body.scrollTop + followObj_y)) {


			var dy = (document.body.scrollTop + followObj_y - followObj.offsetTop) * delta;


			dy = (dy > 0 ? 1 : -1) * Math.ceil(Math.abs(dy));


			followObj.style.top = followObj.offsetTop + dy;


		}


		followObj.style.display = '';


	}


}


function closeBanner() {


	closeB = true;


	return;


}





var theFloaters = new floaters();