data=new Array("../img/b_oOffice.gif","../img/b_oMap.gif","../img/b_oLawyers.gif","../img/b_oContuct.gif","../img/b_oOfficeE.gif","../img/b_oMapE.gif","../img/b_oLawyersE.gif","../img/b_oContuctE.gif");
btn=new Array();
for(i=0;i<data.length;i++){btn[i]=new Image();btn[i].src=data[i];}
function swapImg(str,num){document.images[str].src ="../img/b_" + num + ".gif";}