// JavaScript Document

function changePage (url, element, curPage) {
	var newPage = document.getElementById(element).value;
	if (newPage == curPage) { return; }
	window.open (url+newPage,'_self');
}

function preLoad() {
	imgProcessing = new Image();
	imgProcessing.src = '/images/processing.gif';
}

function checkMonth() {
	if (document.getElementById('yearmenu').value == 'All') {
		document.getElementById('monthmenu').disabled=true;
	} else {
		document.getElementById('monthmenu').disabled=false;		
	}
}

function removeElement(divName, elementName) {
  var div = document.getElementById(divName);
  var element = document.getElementById(elementName);
  div.removeChild(element);
}

function createOverlayDialog(theImage) {

	imgOverlay = new Image();
	imgOverlay.src = theImage;
	imgRatio = imgOverlay.width/imgOverlay.height

	var newHFld = document.createElement('div');
	newHFld.id = 'overlayDiv';
	newHFld.style.border = '#000000 1px solid';
	newHFld.style.background = 'url(/images/overlay.gif)';
	newHFld.style.height = (755/imgRatio)+10+'px';
	newHFld.style.width = '765px';			
	newHFld.style.position = 'absolute';
	newHFld.style.top = '10px';
	newHFld.style.left = '10px';
	newHFld.style.paddingBottom = '10px';
	newHFld.style.zIndex = '50';
	document.getElementById('pagearea').appendChild(newHFld);

	var newImg = document.createElement('img');
	newImg.id = 'overlayImage';
	newImg.src = theImage;
	newImg.style.position = 'absolute';
	newImg.style.top = '5px';
	newImg.style.left = '5px';
	newImg.style.zIndex = '1';
	newImg.width = '755px';
	document.getElementById('overlayDiv').appendChild(newImg);

}