function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		glowna_over = newImage("images/glowna2.gif");
		firma_over = newImage("images/firma2.gif");
		oferta_over = newImage("images/oferta2.gif");
		katalog_over = newImage("images/katalog2.gif");
		preloadFlag = true;
	}
}

function otworz(src){
aw=screen.availWidth;
ah=screen.availHeight;
if (aw>800 && ah>600) {
	sets=
	"left=" + (aw-600)/2 + ","
	+ "top=" + (ah-600)/2 + ","
	+ "width=600,"
	+ "height=600,"
	+ "toolbar=no,"
	+ "location=no,"
	+ "directories=no,"
	+ "status=no,"
	+ "menubar=no,"
	+ "scrollbars=no,"
	+ "resizable=no"
	nowe = window.open(src,'katalog',sets);
}
else {
	sets=
	"left=" + (aw-540)/2 + ","
	+ "top=0,"
	+ "width=540,"
	+ "height=540,"
	+ "toolbar=no,"
	+ "location=no,"
	+ "directories=no,"
	+ "status=no,"
	+ "menubar=no,"
	+ "scrollbars=yes,"
	+ "resizable=no"
	nowe = window.open(src,'katalog',sets);
}
}

function otworz(src){
aw=screen.availWidth;
ah=screen.availHeight;
if (aw>800 && ah>600) {
	sets=
	"left=" + (aw-600)/2 + ","
	+ "top=" + (ah-600)/2 + ","
	+ "width=600,"
	+ "height=600,"
	+ "toolbar=no,"
	+ "location=no,"
	+ "directories=no,"
	+ "status=no,"
	+ "menubar=no,"
	+ "scrollbars=no,"
	+ "resizable=no"
	nowe = window.open(src,'katalog',sets);
}
else {
	sets=
	"left=" + (aw-540)/2 + ","
	+ "top=0,"
	+ "width=540,"
	+ "height=540,"
	+ "toolbar=no,"
	+ "location=no,"
	+ "directories=no,"
	+ "status=no,"
	+ "menubar=no,"
	+ "scrollbars=yes,"
	+ "resizable=no"
	nowe = window.open(src,'katalog',sets);
}
}

function photo(src) {
	aw=screen.availWidth;
	ah=screen.availHeight;
	sets=
	"left=" + (aw-620)/2 + ","
	+ "top=" + (ah-474)/2 + ","
	+ "width=620,"
	+ "height=474,"
	+ "toolbar=no,"
	+ "location=no,"
	+ "directories=no,"
	+ "status=no,"
	+ "menubar=no,"
	+ "scrollbars=no,"
	+ "resizable=no"
	nowe = window.open(src,'photo',sets);
}