var itv=50;var step=10;var start=0;var end=0;var currentOpac;var changing;
function opacity(obj,s,e){start=s;end=e;currentOpac=s;theobject=obj;changing=setInterval("opacityit(theobject)",itv);}
function upacity(obj,end){clearInterval(changing);changeOpac(obj,end);}
function opacityit(obj){if(start>end){if(currentOpac>end){currentOpac=currentOpac-step;changeOpac(obj,currentOpac);}else if(window.highlighting)clearInterval(changing);}else if(start<end){if(currentOpac<end){currentOpac=currentOpac+step;changeOpac(obj,currentOpac);}else if(window.changing)clearInterval(changing);}}
function changeOpac(obj,opacity){var object=obj.style;object.opacity=(opacity/100);object.MozOpacity=(opacity/100);object.KhtmlOpacity=(opacity/100);object.filter="alpha(opacity="+opacity+")";}