// JavaScript Document
var counts = 3;	
	img1 = new Image();
	img1.src = 'images/friends001.gif';
	img2 = new Image();
	img2.src = 'images/friends002.gif';
	img3 = new Image();
	img3.src = 'images/friends003.gif';	
	alt1 = new Image();
	alt1.alt = '中国站长站';
	alt2 = new Image();
	alt2.alt = '中顺集团';
	alt3 = new Image();
	alt3.alt = '北京师范大学';	
	var nn = 1;
	var key = 0;
	function change_img() {
		if (key == 0) {
			key = 1;
		} else if (document.all) {
			document.getElementById("pic").filters[0].Apply();
			document.getElementById("pic").filters[0].Play(duration = 2);}		
		eval('document.getElementById("pic").src=img' + nn + '.src');		
		eval('document.getElementById("pic").alt=alt' + nn + '.alt');
		for ( var i = 1; i <= counts; i++) {			
		}		
		nn++;
		if (nn > counts) {
			nn = 1;
		}
		tt = setTimeout('change_img()', 3500);	}
	function changeimg(n) {
		nn = n;
		window.clearInterval(tt);
		change_img();
	}
	function ImageShow() {
		document.write('<div class="picshow_main">');		
		document.write('<div><img id="pic" class="imgbig" /></div>');		
		document.write('</div>');
		change_img();	}
	ImageShow();