initNav = function() 
{
	if (typeof document.body.style.maxHeight == 'undefined') {
		var nav = document.getElementById("main-nav");
		var lis = nav.getElementsByTagName("li");
		for (var i=0; i<lis.length; i++)
		{
			lis[i].onmouseover = function()
			{
				this.className += " hover";
			}
			lis[i].onmouseout = function()
			{
				this.className = this.className.replace(" hover", "");
			}
		}
	}
}

if (document.all && !window.opera)
	attachEvent("onload", initNav);

function initPage()
{
	var blocks = document.getElementsByTagName("li");
	for (var i=0; i<blocks.length; i++)
	{
		if (blocks[i].className.indexOf("roll") != -1)
		{
			if ( blocks[i].className.indexOf("close") == -1 ) blocks[i].className += " open";
			var links = blocks[i].getElementsByTagName("strong");
		
			for (var k=0; k<links.length; k++) {
					
				if (links[k].className == "open-close") {
						
					links[k].onclick = function()
					{
						if ( this.parentNode.className.indexOf("open") != -1 ) 
						{
							this.parentNode.className = this.parentNode.className.replace("open", "close");
						}
						else
						{
							this.parentNode.className += " open";
							// alert("Hola!");
						}
						return false;
					}
				}
			}
		}
	}
	var blocks2 = document.getElementsByTagName("li");
	for (var i=0; i<blocks2.length; i++)
	{
		if (blocks2[i].className.indexOf("roll2") != -1)
		{
			if ( blocks2[i].className.indexOf("close2") == -1 ) blocks2[i].className += " open2";
			var links2 = blocks2[i].getElementsByTagName("a");
		
			for (var k=0; k<links2.length; k++) 
			{				
				if (links2[k].className == "button-open") 
				{
					links2[k].onclick = function()
					{
						if ( this.parentNode.className.indexOf("open2") != -1 ) 
						{
							this.parentNode.className = this.parentNode.className.replace("open2", "close2");
						}
						else
						{
							this.parentNode.className += " open2";
						}
						return false;
					}
				}
			}
		}
	}
}

if (window.addEventListener){
	window.addEventListener("load", initPage, false);
}
else if (window.attachEvent){
	window.attachEvent("onload", initPage);
}