function blend(obj){
if (obj.filters.alpha.opacity<100)
obj.filters.alpha.opacity+=15
else if (window.highlighting)
clearInterval(highlighting)
}	
function alpha_up(obj1){
theobject=obj1
highlighting=setInterval("blend(theobject)",30)
}
function alpha_down(obj2){
clearInterval(highlighting)
obj2.filters.alpha.opacity=50
}