function initLayout()
{
	// set z-indexes for IE
	if(navigator.userAgent.indexOf('MSIE')!=-1)
	{
		breadcrumb.style.zIndex = '-1';
		breadcrumbBackgroundOverlay.style.zIndex = '-2';
		breadcrumbBackground.style.zIndex = '-3';
	}
	
	// hide breadcrumb
	//setBreadcrumbVisibility(0);
	
	// set background image
	//setHeaderImage('headerinfusion.jpg')
	
	// create drop down menu
	setDropDownMenu('mainMenu',10);
	
	// create sidebar menu
	setSidebarMenu('rightMenu');
}

function setDropDownMenu(id,offset)
{
	var ultags = document.getElementById(id).getElementsByTagName('ul')[0].getElementsByTagName('ul');
	
	for (var t=0; t<ultags.length; t++)
	{
		//ultags[t].style.top=ultags[t].parentNode.offsetHeight+offset+"px"
		
		ultags[t].parentNode.onmouseover=function()
		{
			this.getElementsByTagName("ul")[0].style.visibility="visible"
		}
		
		ultags[t].parentNode.onmouseout=function()
		{
			this.getElementsByTagName("ul")[0].style.visibility="hidden"
		}
	}
}

function setSidebarMenu(id)
{
	
	var ultags = document.getElementById(id).getElementsByTagName('ul')[0].getElementsByTagName('ul');

	for (var t=0; t<ultags.length; t++)
	{
		if(t>0) ultags[t].parentNode.className = '';

		ultags[t].parentNode.onclick=function()
		{
			if(this.tagName=='LI')
			{
				// close other items
				var ultags = this.parentNode.getElementsByTagName('li');
				for (var t=0; t<ultags.length; t++)
					ultags[t].className = '';
				
				// open current item
				this.className = 'Active';
			}			
		}
		
	}

}


// show (mode=1) or hide (mode=0) breadcrumb
function setBreadcrumbVisibility(mode)
{
	var visiblity;
	if(mode)
		visiblity = '';
	else
		visiblity = 'hidden';

	document.getElementById('breadcrumb').style.visibility = visiblity;
	document.getElementById('breadcrumbBackgroundOverlay').style.visibility = visiblity;
}

function setHeaderImage(image)
{
	document.getElementById('mainMenu').style.backgroundImage = 'url(images/' + image + ')';
	document.getElementById('breadcrumbBackground').style.backgroundImage = 'url(images/' + image + ')';
	
}

if (window.addEventListener)
	window.addEventListener("load", initLayout, false)
else if (window.attachEvent)
	window.attachEvent("onload", initLayout)