function enlargeImage(imageSrc, imageTitle) {
	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 - 600) / 2;
	var topOffset = scrolledY + (centerY - 425) / 2;
	var divName = "enlargeImg";

	document.getElementById('screen').style.width = centerX + "px";
	document.getElementById('screen').style.height = centerY + "px";
	document.getElementById('screen').style.display = "";
	leftOffset = scrolledX + (centerX/2) - 450;
	topOffset = scrolledY + (centerY/2) - 275;

	document.getElementById(divName).style.top = topOffset + "px";
	document.getElementById(divName).style.left = leftOffset + "px";
	document.getElementById(divName).style.display = "";

	document.getElementById("enlarged").src = imageSrc;
	document.getElementById("enlargedTitle").innerHTML = imageTitle;
}