// JavaScript Document
function getScreenCenterY()
{
	var y = 0;
	//y = getScrollOffset()+(getInnerHeight()/2); // acutal position of center y
	y = getScrollOffset()+(getInnerHeight()/2)-100; // acutal position of center y
	return(y);
}

function getScreenCenterX()
{
	//return(document.body.clientWidth/2);
	return(document.body.clientWidth/2)-225;
}

function getInnerHeight()
{
	var y;
	if (self.innerHeight) // all except Explorer
		y = self.innerHeight;
	else if (document.documentElement && document.documentElement.clientHeight)	// Explorer 6 Strict Mode
		y = document.documentElement.clientHeight;
	else if (document.body) // other Explorers
		y = document.body.clientHeight;
	return(y);
}

function getScrollOffset()
{
	var y;
	if (self.pageYOffset) // all except Explorer
		y = self.pageYOffset;
	else if (document.documentElement && document.documentElement.scrollTop) // Explorer 6 Strict
		y = document.documentElement.scrollTop;
	else if (document.body) // all other Explorers
		y = document.body.scrollTop;
	return(y);
}