function tabSwitch (new_tab, new_content) {
	
	document.getElementById('tab-1').style.display = 'none';
	document.getElementById('tab-2').style.display = 'none';
	document.getElementById('tab-3').style.display = 'none';
	document.getElementById('tab-4').style.display = 'none';
	document.getElementById(new_content).style.display = 'block';
	
	document.getElementById('tab-link-1').className = '';
	document.getElementById('tab-link-2').className = '';
	document.getElementById('tab-link-3').className = '';
	document.getElementById('tab-link-4').className = '';
	document.getElementById(new_tab).className = 'selected';
}

function newsSwitch (new_item) {
	document.getElementById('item-1').style.display = 'none';
	document.getElementById('item-2').style.display = 'none';
	document.getElementById('item-3').style.display = 'none';
	document.getElementById('item-4').style.display = 'none';
	document.getElementById(new_item).style.display = 'block';
}
/*Augment native obj Array with isArray*/
if (typeof Array.isArray === "undefined")
{
	Array.isArray = function(arg)
	{
		return (Object.prototype.toString.call(arg) === "[object Array]");
	}
}

var utils = {
	
	getQueryString: function()
	{
		var url = window.location,
			qs_pattern = /\?(.*)$/i,
			res;
		res = qs_pattern.exec(url);
		if (Array.isArray(res) )
		{
			//match found qs is now in res[1]
			return res[1]
		}
		
		return null;
		
	}
}