function screenHeight(){
	return $.browser.opera? window.innerHeight : $(window).height();
}

function screenWidth(){
	return $.browser.opera? window.innerWidth : $(window).width();
}

$(document).ready(function(){
	$(".zoomfoto").mouseenter(function(){
		
		if (screenWidth() > 1050) {
			marginLeft = Math.round((screenWidth()-1000)/4);
		}
		else marginLeft = 10;

		$('#fixed_img').attr('src', jQuery(this).attr('src'));
		$('#fixed_img').css('max-height','330px');
		$('#fixed_img').css('margin-top',($(window).scrollTop() + screenHeight() - 340)+ 'px');
		$('#fixed_img').css('margin-left',marginLeft);
		$('#fixed_img').css('border','4px dotted gray');
		$('#fixed_img').css('display','block');
	}).mouseleave(function(){
		$('#fixed_img').css('display','none');
		
    });
});