// JavaScript Document
function initTabs(){
	var tabbox = document.getElementById('tabbox');
	tabbox.style.height = '370px';
	var blocks = tabbox.getElementsByTagName('div');
	var navlinks = document.getElementById('navlinks');
	for(i = 0; i < blocks.length; i++){
		newlink = document.createElement('a');
		newlink.setAttribute('href', 'javascript:showBlock('+i+')');
		if(i == 0){
			newlink.style.backgroundColor = '#8BC53F';
			blocks.item(i).style.display = 'block';
		}	else{
			blocks.item(i).style.display = 'none';
		}
		navlinks.appendChild(newlink);
	}
}

function showBlock(block){
	var tabbox = document.getElementById('tabbox');
	var blocks = tabbox.getElementsByTagName('div');
	var navlinks = document.getElementById('navlinks');
	var navlink = navlinks.getElementsByTagName('a');
	for(i = 0; i < blocks.length; i++){
		if(i == block){
			navlink.item(i).style.backgroundColor = '#8BC53F';
			blocks.item(i).style.display = 'block';
		}	else{
			navlink.item(i).style.backgroundColor = '#199F49';
			blocks.item(i).style.display = 'none';
		}
	}
}

function addLoadEvent(func) {
	var oldonload = window.onload;
	if (typeof window.onload != 'function') {
		window.onload = func;
	}
	else {
		window.onload = function() {
			oldonload();
			func();
		}
	}
}

addLoadEvent(initTabs);