function popWindow(url, nameW, width, height, dialog) {
	x = 100;
	y = 200;
	if (navigator.appVersion.indexOf('4') != -1) {
		x = screen.width / 2 - (width / 2);
		y = screen.height / 2 - (height / 2);
	}
	params = '';
	if (height != 0) params = params + 'height='+height+',top='+y;
	if (width != 0) params = params	 + ((params == '') ? '' : ',') + 'width='+width+',left='+x;
	if (dialog) params = params + ((params == '') ? '' : ',') + 'scrollbars=0,resizable=0,menubar=0,toolbar=0,status=0,location=0,directories=0';
	else params = params + ((params == '') ? '' : ',') + 'scrollbars=1,resizable=1,menubar=1,toolbar=0,status=1,location=1';
	
	wref = window.open(url, nameW, params);
	wref.focus();
}

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;