function selectTab(tabNum) {
	
	var arr = new Array("1","2","3","4");
	for(var i=0; i<arr.length; i++) {
		if (arr[i] != tabNum) {
			$("div.#tab" + arr[i]).css('display', 'none');
			$("a.#but" + arr[i]).removeClass('selected');
		}
		$("div#tab" + tabNum).css('display', 'block');
		$("a.#but" + tabNum).addClass('selected');
	}
	
	
}