function openwin(url,target,w,h) {
var w=300;
var h=100;
//alert(screen.availHeight);
window.open(url, target,
    'top='+(screen.availHeight/2-h/2)
        +',left='+(screen.availWidth/2-w/2)
        +',menubar=no,directories=no,location=no,resizable='
        +0+',scrollbars='+0+',width='+w+',height='+h);
}
function collapse(id, img) {
	obj = document.getElementById('div'+id);
 	obj.style.display = (obj.style.display != 'none')?'none':'';
	if(img) {
		objimg = document.getElementById('img'+id);
		objimg.src = (obj.style.display != 'none')?'/img/cat_minus.gif':'/img/cat_plus.gif';
	}
}