var cashedImages = new Array();

function preLoadImages(imgSrc)
{
	cashedImages[imgSrc] = new Image();
	cashedImages[imgSrc].src = imgSrc;
}


function fold(targetId)
{
	var el = document.getElementById(targetId).style;
	//var img = document.getElementById('img_' + targetId).style;
	if (el.display == '') el.display = 'none';

	switch (el.display) {
	case 'block':
		el.display = 'none';
		//img.visibility = 'visible';
		break;
	case 'none':
		//img.visibility = 'hidden';
		el.display = 'block';
		break;
	}
}

function showMsgBox(mbId, nearEl) {
   var msgBox = document.getElementById(mbId);
   msgBox.style.visibility = 'visible';
   var xPos = (nearEl.style.left != undefined && nearEl.style.left) ? nearEl.style.left : event.x;
   var yPos = (nearEl.style.top != undefined && nearEl.style.top) ? nearEl.style.top : event.y;
   xPos += 10;
   yPos += 10;
   msgBox.style.left = xPos;
   msgBox.style.top = yPos;
}

function hideMsgBox(mbId) {
   var msgBox = document.getElementById(mbId);
   msgBox.style.visibility = 'hidden';
}