function setMiddle() {
	if(resize_val > 0) {
		var WH = getWindowHeight();
		var BH = document.body.clientHeight;
	
		var global = document.getElementById('global');
		var GH = global.clientHeight;	
		
		if(GH < WH) {
			var white_space = (Number(WH)-Number(GH))/2;
			document.getElementById('home').style.top = white_space+'px';
		} else {
			document.getElementById('home').style.top = '0';
		}
	}
	/* RENE - UPDATE POZYCJI POPUPA */
	if (typeof(updatePopup) == 'function') updatePopup();
}

function getWindowHeight() {
	if( typeof( window.innerWidth ) == 'number' ) {
	   	return window.innerHeight;
	} else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
		return document.documentElement.clientHeight;
	} else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
		return document.body.clientHeight;
	} else {
		return 0;
	}
}