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) {
		nav_01_over = newImage("/images/site/nav_01-over.gif");
		nav_02_over = newImage("/images/site/nav_02-over.gif");
		nav_03_over = newImage("/images/site/nav_03-over.gif");
		nav_04_over = newImage("/images/site/nav_04-over.gif");
		nav_05_over = newImage("/images/site/nav_05-over.gif");
		nav_06_over = newImage("/images/site/nav_06-over.gif");
		preloadFlag = true;
	}
}


/**
 *
 * Changes sizes of Text Areas
 *
 */

function increaseNotesHeight(thisTextarea, add) {
	if (thisTextarea) {
		newHeight = parseInt(thisTextarea.style.height) + add;
		thisTextarea.style.height = newHeight + "px";
	}
	if (document.getElementById('notes_height')) {
		document.getElementById('notes_height').value = newHeight;
	}
}

function decreaseNotesHeight(thisTextarea, subtract) {
	if (thisTextarea) {
		if ((parseInt(thisTextarea.style.height) - subtract) > 30) {
			newHeight = parseInt(thisTextarea.style.height) - subtract;
			thisTextarea.style.height = newHeight + "px";
		}
		else {
			newHeight = 30;
			thisTextarea.style.height = "30px";
		}			
	}
	if (document.getElementById('notes_height')) {
		document.getElementById('notes_height').value = newHeight;
	}
}