function show(obj){
obj.style.filter='alpha(opacity=60)'
}

function hide(obj){
obj.style.filter='alpha(opacity=30)'
}

function popUp(wi,hi) {
window.open('about:blank','popUp','scrollbars=yes,width='+wi+', height='+hi+', left='+(screen.availWidth-wi)/2+',top='+(screen.availHeight-hi)/2+'');
return true;
}