function popUp(page,varname,scrl,w,h) {
	// console.log('page:', page, 'varname:', varname, 'scrl:', scrl, 'w:', w, 'h:', h);
	var mywindow = window.open(page,varname,"location=0,menubar=1,status=0,scrollbars="+ scrl +",width="+ w +",height="+ h +",resizable=0");
}

function showObj(obj) {
	document.getElementById(obj).style.display = "block";
}

function hideObj(obj) {
	document.getElementById(obj).style.display = "none";
}

function removeImages() {
	if (!document.images) return;
	for (var i = 0; i < document.images.length; i++) {
		document.images[i].src = "";
	}
}