/*****
* http://dhtmlpopups.webarticles.org/
*****/
var ie = document.all;
var nn6 = document.getElementById &&! document.all;

var isdrag = false;
var x, y;
var dobj;

function setOpacity( value ) {
	document.getElementById("iav_offer").style.opacity = value / 10;
	document.getElementById("iav_offer").style.filter = 'alpha(opacity=' + value * 10 + ')';
}

function fadeInMyPopup() {
	for( var i = 0 ; i <= 90 ; i++ )
	setTimeout( 'setOpacity(' + (i / 10) + ')' , 8 * i );
}

function closeIavOffer() {
	for( var i = 0 ; i <= 100 ; i++ ) {
		setTimeout( 'setOpacity(' + (10 - i / 10) + ')' , 8 * i );
	}
	setTimeout('closeMyPopup()', 800 );
}

function closeMyPopup() {
	document.getElementById("iav_offer").style.display = "none";
	var requester = new Array;
	requester[0] = new ajaxObject();
	requester[0].update('/authenticate/auth.php?v=setiav');
}

function ShowIAVOffer() {
	myPopupRelocate();
	setOpacity( 0 );
	document.getElementById("iav_offer").style.display = "block";
	fadeInMyPopup();
	document.body.onscroll = myPopupRelocate;
	window.onscroll = myPopupRelocate;
}

function movemouse( e ) {
	if( isdrag ) {
		dobj.style.left = nn6 ? tx + e.clientX - x : tx + event.clientX - x;
		dobj.style.top  = nn6 ? ty + e.clientY - y : ty + event.clientY - y;
		return false;
	}
}

function selectmouse( e ) {
	var fobj       = nn6 ? e.target : event.srcElement;
	var topelement = nn6 ?  'HTML'  :  'BODY' ;
	while (fobj.tagName != topelement && fobj.className !=  'dragme' ) {
		fobj = nn6 ? fobj.parentNode : fobj.parentElement;
	}

	if (fobj.className== 'dragme' ) {
		isdrag = true;
		dobj = document.getElementById('iav_offer');
		tx = parseInt(dobj.style.left+0);
		ty = parseInt(dobj.style.top+0);
		x = nn6 ? e.clientX : event.clientX;
		y = nn6 ? e.clientY : event.clientY;
		document.onmousemove=movemouse;
		return false;
	}
}

function myPopupRelocate() {
	var scrolledX, scrolledY;
	if( self.pageYOffset ) {
		scrolledX = self.pageXOffset;
		scrolledY = self.pageYOffset;
	} else if( document.documentElement && document.documentElement.scrollTop ) {
		scrolledX = document.documentElement.scrollLeft;
		scrolledY = document.documentElement.scrollTop;
	} else if( document.body ) {
		scrolledX = document.body.scrollLeft;
		scrolledY = document.body.scrollTop;
	}

	var centerX, centerY;
	if( self.innerHeight ) {
		centerX = self.innerWidth;
		centerY = self.innerHeight;
	} else if( document.documentElement && document.documentElement.clientHeight ) {
		centerX = document.documentElement.clientWidth;
		centerY = document.documentElement.clientHeight;
	} else if( document.body ) {
		centerX = document.body.clientWidth;
		centerY = document.body.clientHeight;
	}

	var leftOffset = scrolledX + (centerX - 250) / 2;
	var topOffset = scrolledY + (centerY - 200) / 2;

	document.getElementById("iav_offer").style.top = topOffset + "px";
	document.getElementById("iav_offer").style.left = leftOffset + "px";
}

function setIavCookie(value) {
	if (document.getElementById('remember_iav').checked == true) {
		var requester = new Array;
		requester[0] = new ajaxObject();
		requester[0].update('/authenticate/auth.php?v=setiavcookie&value='+value);
	}
}

// disable dragging for now as it does not work when using transitional doc type
//document.onmousedown=selectmouse;
//document.onmouseup=new Function("isdrag=false");