a_obj = (ns4) ? 'document.aopNav.document.images' : 'document.images';
//
function aop_load() {
	a_obj = eval(a_obj);
	picarrayA = new Array();
	for(j = 0; j < a_obj.length; j++) {
			if ((obj[j].name != "")  && (a_obj[j].src.indexOf('images/aop_subnav_')>0) ) {
				picarrayA[j] = new Image();
				picarrayA[j].src = "images/aop_subnav_" + a_obj[j].name + "_hi.gif";
				//alert('loading: '+picarrayA[j].src);
			}// 
	}
} // end function
// basic image rollovers:
//
function a_hiroll(roll) {
	a_obj = eval(a_obj);
	a_obj[roll].src = "images/aop_subnav_" + roll + "_hi.gif";
}
function a_loroll(roll) {
	a_obj = eval(a_obj);
	a_obj[roll].src = "images/aop_subnav_" + roll + ".gif";
}
//
winLeft = (screen.width-688)/2; winTop = (screen.height-418)/2-(.15*418);
function aopWhere() {
window.open("where.shtml", "time", "toobar=no,width=688,height=418,directories=no,status=no,scrollbars=no,noresizable=no,menubar=no,");
}