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

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

preldFlag = false;
function preloadLocalImages() {
	if (document.images) {
		img_1 = nwImage("grcs/en/btns/more.gif");
		img_2 = nwImage("grcs/en/btns/close.gif");
		img_3 = nwImage("grcs/en/btns/yes-presentation.gif");
		img_4 = nwImage("grcs/en/btns/no-presentation.gif");
		img_5 = nwImage("2005_fall_focus/grcs/cover.jpg");
		preldFlag = true;
	}
}
function toggleText(which) {
	var btn = which+"BTN";
	el = document.getElementById(which);
	thisBtn = document.getElementById(btn);
	var display = el.style.display?'':'none';
	el.style.display = display;
	if(display=='none'){
		thisBtn.src = "grcs/en/btns/more.gif";
		thisBtn.title = "Click to read more information.";
	}else{
		thisBtn.src = "grcs/en/btns/close.gif";
		thisBtn.title = "Click to hide this extra information.";
	}
}
function showPager(){
	el = document.getElementById('hook');
	el.style.display = '';
}