// Browser safe opacity handling function

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

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

function fadeOutMyPopup() {
 for( var i = 0 ; i <= 100 ; i++ ) {
   setTimeout( 'setOpacity(' + (10 - i / 10) + ')' , 8 * i );
 }
 document.getElementById("mypopup").style.display = "none";
}

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 - 830) / 2;
 var topOffset = scrolledY + (centerY - 550) / 2;

 document.getElementById("mypopup").style.top = topOffset + "px";
 document.getElementById("mypopup").style.left = leftOffset + "px";
}
function firedpopup(){
 setOpacity( 0 );
 myPopupRelocate();
 document.getElementById("mypopup").style.display = "block";
 document.body.onscroll = myPopupRelocate;
 window.onscroll = myPopupRelocate;
 fadeInMyPopup();
}
function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}
function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return true;
}


function fireMyPopup() {
	if(readCookie('hover') != 'seen'){
		createCookie('hover','seen',1);
		firedpopup();
	}
}