function systemPreview() {

}
systemPreview.showDropDown = function(sender) {
	if(systemPreview.dropdowntimer != null) {
		clearTimeout(systemPreview.dropdowntimer);
	}
	if(sender) {
		var dd = document.getElementById('dropdownPreview');
		dd.style.left = (Left(sender) - 2)+'px';
		dd.style.display = "block";
		dd.onmouseout = systemPreview.hideDropDown;
		dd.onmouseover = systemPreview.showDropDown;
	}
}

systemPreview.dropdowntimer = null;

systemPreview.hideDropDown = function() {
	systemPreview.dropdowntimer = setTimeout("systemPreview.doHideDropDown();", 500);
}
systemPreview.doHideDropDown = function() {
	var dd = document.getElementById('dropdownPreview');
	dd.style.display = "none";
	systemPreview.dropdowntimer = null;
}

hoverObject = function(el) {
	el.className = 'ddPreviewItemHover';
	el.onmouseout = function() { this.className="ddPreviewItem"; }
	el.onclick = function () { systemClickFirstLinkInObject(this); }
}