/** DEFAULT JAVASCRIPT FUNCTIONS */

/**
* Sets several values when page is displayed
* @param button_id - integer value of the button pressed
* @param isIE - boolean if client is Internet Explorer useragent
*/
function prepPage(button_id) {
	if (button_id) {		
		//Set the left content & button
		setLeftMenu(button_id);
	}
	else {
		setLeftMenu('51');
	}
}

function setLeftMenu(id) {
	for(i=51;i<=54;i++) {
		document.getElementById('menu'+i).style.visibility = 'hidden';
		unsetLeftMenuButton(i);
	}
	element = document.getElementById('menu'+id);
	element.style.visibility = 'visible';
	setLeftMenuButton(id);
	if(id==52) {
		//document.search_form.search.focus();
		var button = document.getElementById('m52');
		var onclick = button.getAttributeNode("onClick");
		button.setAttribute('onClick','document.location.href="?button_id=52"');
	}
}

function setLeftMenuButton(id) {
	element = document.getElementById('m'+id);
	if (element) {
		element.style.background='#000000';
		element.setAttribute('onMouseOver','');
		element.setAttribute('onMouseOut','');
	}
}

function unsetLeftMenuButton(id) {
	element = document.getElementById('m'+id);
	if (element) {
		element.style.background='#999999';
		element.setAttribute('onMouseOver', 'darkenMenu(this)');
		element.setAttribute('onMouseOut', 'lightenMenu(this)');
	}
}