if (!document.getElementById)
{
	//alert('This page contains script that is not supported by Netscape 4. Please upgrade your browser.');
	location.href = 'http://www.guidance.be/browser_update.htm';
}
								
function getObj(name)
{
	//use this function to get a reference to an object by giving it's name
	//works for IE5, IE6, NS6
	if (document.getElementById)
	{
		this.obj = document.getElementById(name);
		this.style = document.getElementById(name).style;
	}
	else if (document.all)
	{
		this.obj = document.all[name];
		this.style = document.all[name].style;
	}
	else if (document.layers)
	{
		this.obj = document.layers[name + name];
		this.style = document.layers[name + name];
	}
}

function hideall()
	{
		//close all menu's
		//var x = new getObj('ebooksmenu');
		//x.style.visibility = 'hidden';
		//var x = new getObj('books24x7menu');
		//x.style.visibility = 'hidden';
		//var x = new getObj('aboutmenu');
		//x.style.visibility = 'hidden';
		if (document.getElementById('TopMenuItem_1'))
		{ var x = new getObj('TopMenuItem_1'); x.style.visibility = 'hidden'; }
		if (document.getElementById('TopMenuItem_2'))
		{ var x = new getObj('TopMenuItem_2'); x.style.visibility = 'hidden'; }
		if (document.getElementById('TopMenuItem_3'))
		{ var x = new getObj('TopMenuItem_3'); x.style.visibility = 'hidden'; }
		if (document.getElementById('TopMenuItem_4'))
		{ var x = new getObj('TopMenuItem_4'); x.style.visibility = 'hidden'; }
		if (document.getElementById('TopMenuItem_5'))
		{ var x = new getObj('TopMenuItem_5'); x.style.visibility = 'hidden'; }
		if (document.getElementById('TopMenuItem_6'))
		{ var x = new getObj('TopMenuItem_6'); x.style.visibility = 'hidden'; }
		if (document.getElementById('TopMenuItem_7'))
		{ var x = new getObj('TopMenuItem_7'); x.style.visibility = 'hidden'; }
	}
				
function visibility(flag,div)
{
	//show or hide a div(menu) object
	//flag=0 --> visible
	//flag=1 --> hidden
	var x = new getObj(div);
	if (flag==0)
		{ x.style.visibility='visible'; }
	else
		{ x.style.visibility='hidden'; }
}
				
function change_td_style(flag,td)
{
	//change the style of a cell
	//flag=0 --> reset the style
	//flag=1 --> change the style properties
	//document.getElementById().style.backgroundColor
	var x = new getObj(td);
	if (flag==0)
		{x.style.backgroundColor='';}
	else
		{x.style.backgroundColor='#8abbea';}
}

function change_height() 
{
	var name = navigator.appName;
	
	if(name == "Microsoft Internet Explorer") name = true;
	else name = false;
	
	if(name) 
		{
			width = document.body.clientWidth;
			height = document.body.clientHeight;
		}
	else 
		{
			height = window.innerHeight;
			width = window.innerWidth;
		}
	
	height=height-16-18-76-16-17;
	
	//document.getElementById('testresize').style.height=height;
	if(document.getElementById('leftmenu'))
	{
		document.getElementById('leftmenu').style.height=height;
	}
}

function change_td_left_menu(flag,td)
{
	//change the style of a cell
	//flag=0 --> reset the style
	//flag=1 --> change the style properties
	//document.getElementById().style.backgroundColor
	var x = new getObj(td);
	if (flag==0)
		{x.style.backgroundColor='';
		 x.style.borderWidth='';}
	else {x.style.backgroundColor='#A2B6CB';
		  x.style.borderWidth='1px';
		  x.style.borderStyle='groove';
		  x.style.borderColor='#02234E';}
}

function Upozorenje(td)
{
	alert("hey")
}

window.onresize = change_height;
window.onload = change_height;