var middleInfoBox = null;
var middleTransParent = null;

function createInfoBox(){
	var body = document.getElementsByTagName("body")[0];
	var div = document.createElement("div");
	var transparent = document.createElement("div");
	window.scrollTo(0,0);
	div.id = 'middleInfoBox';
	div.style.display = 'block';
	transparent.id = 'transparent';
	transparent.style.display = 'block';
	var x = document.getElementById("footer").offsetTop+250;
	transparent.style.height = x+'px';
	middleTransParent = transparent;
	body.appendChild(middleTransParent);
	body.appendChild(div);	
	return div;
}

function deleteInfoBox() {
	if(middleInfoBox != null) {
		var body = document.getElementsByTagName("body")[0];
		body.removeChild(middleInfoBox);
		body.removeChild(middleTransParent);
	}
	middleInfoBox = null;
}

function showInfoDiv(message,buttonset) {
	if(middleInfoBox == null) {
		var box = createInfoBox();
		var anzK = buttonset.split("<a");
		k = anzK.length-1;
		middleInfoBox = box;
		if(k <= 0) {
			k = 1;
		}
		marginLeft = k*70;
		var closing = '<div class="close"><a id="closureWindowLink" onclick="deleteInfoBox();" style="cursor:pointer;"><img src="./images/page/ajaxbox/hinweisbox_closure.png" /></a></div>';
		middleInfoBox.innerHTML = closing + '<div id="middleInfoBoxContent">'+message+'</div>'+ '<div id="middleInfoBoxButtons"><div id="buttonSetWindow" style="position: relative; left: 50%; margin-left: -'+ marginLeft+'px; text-align: center;">'+buttonset+'<div style="clear:both;></div></div></div>';
		return box;
	}
}