// Get object from id

function $(element) 

{

	if(typeof element == "string")

	{	

		if( document.getElementById) 

		{ //DOM; IE5, NS6, Mozilla, Opera

			return document.getElementById(element); 

		}

		if( document.layers ) 

		{ //Netscape layers

			return document.layers[element]; 

		}

		if( document.all ) 

		{ //Proprietary DOM; IE4

			return document.all[element]; 

		}

		if( document[element] ) 

		{ //Netscape alternative

			return document[element]; 

		}

	

		return false;

	}

	else return element;

}



function divswap(show_div, all_divs)

{

	show_div = $(show_div);



	for(var i=0; i < all_divs.length; i++)

	{

		// convert div id to object

		current_div = $(all_divs[i]);



		if(current_div.id != show_div.id)

			current_div.style.display = "none";

	}



	show_div.style.display = "block";

}





function addEvent(elm, evType, fn, useCapture) {

	if (elm.addEventListener) {

		elm.addEventListener(evType, fn, useCapture);

		return true;

	}

	else if (elm.attachEvent) {

		var r = elm.attachEvent('on' + evType, fn);

		return r;

	}

	else {

		elm['on' + evType] = fn;

	}

}