function activ(id)
{
	
	var currTabElem = document.getElementById('navilink'+id); 
	if (currTabElem.getAttribute("className"))
	{
		if (currTabElem.getAttribute("className").indexOf('_active')==-1)
		{
			currTabElem.setAttribute("className", currTabElem.getAttribute("className") + "_active"); 
		}
	}
	else
	{
		if (currTabElem.getAttribute("class").indexOf('_active')==-1)
		{
			currTabElem.setAttribute("class", currTabElem.getAttribute("class") + "_active"); 
		}
	}
	return; 

}
function deactiv(id)
{
	
	var currTabElem = document.getElementById('navilink'+id); 
	if (currTabElem.getAttribute("className"))
	{
		currTabElem.setAttribute("className",currTabElem.getAttribute("className").replace("_active",""))
	}
	else
	{
		currTabElem.setAttribute("class",currTabElem.getAttribute("class").replace("_active",""))
	}
	
}