function turnon(cong) {
document.getElementById(cong).style.backgroundColor='#fe7';
//document.getElementById(cong).style.backgroundColor='#ee7';
//document.getElementById(cong).style.backgroundColor='#fbb';
//document.getElementById(cong).style.backgroundColor='#f77';
}

function turnoff(cong) {
document.getElementById(cong).style.backgroundColor='white';
}


function locateon(xcong) {

document.getElementById(xcong).style.zIndex="1";
//document.getElementById(xcong).src="images/x.gif";

}

function locateoff(xcong) {
document.getElementById(xcong).style.zIndex="-1";
//document.getElementById(xcong).src="images/xa.gif";

}