// Preload Images
categoryViewerBtn = new Image()
categoryViewerBtn.src ="images/btn_hide_categories.png"
categoryViewerBtn_on = new Image()
categoryViewerBtn_on.src ="images/btn_show_categories.png"

var categoriesShowing = 0;
function catToggle() {
	if (categoriesShowing == 1) {
		categoriesShowing = 0;
		btnOn = eval("categoryViewerBtn" + "_on.src");
		document.getElementById('categoryViewerBtn').src = btnOn;
		document.getElementById('catGrid').style.display = 'none';
	}
	else {
		categoriesShowing = 1;	
		btnOff = eval("categoryViewerBtn" + ".src");
		document.getElementById('categoryViewerBtn').src = btnOff;
		document.getElementById('catGrid').style.display = 'block';
	}
	
}