function positionElements() {
	var leftColumn = document.getElementById('leftColumn');
	var leftColumnHeight = leftColumn.offsetHeight;
	var middleColumn = document.getElementById('middleColumn');
	var middleColumnHeight = middleColumn.offsetHeight;
	var rightColumn = document.getElementById('rightColumn');
	var rightColumnHeight;
	if(rightColumn) {
		rightColumnHeight = rightColumn.offsetHeight;
	} else {
		rightColumnHeight = 0;
	}
	var targetHeight = Math.max(Math.max(leftColumnHeight, middleColumnHeight), rightColumnHeight);
	
	if(leftColumn.offsetHeight < targetHeight) {
		document.getElementById('leftColumn').style.height = targetHeight + "px";
		document.getElementById('visitMassArt').style.bottom = "8px";
	}
	if(middleColumn.offsetHeight < targetHeight) {
		document.getElementById('middleColumn').style.height = targetHeight - 30 + "px";
	}
	if(rightColumn && rightColumn.offsetHeight < targetHeight) {
		document.getElementById('rightColumn').style.height = targetHeight - 152 + "px";
	}
}

// For the search box
function clearDefault ( el ) {
        if ( ! el.defaultValue ) {
                el.defaultValue = el.value;
        }
        if (  el.defaultValue == el.value) {
                el.value = "";
        }
}

function setDefault ( el ) {
        if ( el.value == "" && el.defaultValue ) {
                el.value = el.defaultValue;
        }
}