function show(XY) {
   var x1 = XY.split(',')[0];
   var y1 = XY.split(',')[1];
   var x2 = XY.split(',')[2];
   var y2 = XY.split(',')[3];
   
   var w = x2-x1;
   var h = y2-y1;
   //alert(x1);
   
    if (document.layers && document.layers['layer1'] != null) {
        document.layers['layer1'].left = x1;
        document.layers['layer1'].top = y1;
        document.layers['layer1'].width = w+10;
        document.layers['layer1'].height = h+10;
    }
    else if (document.all) {
        document.all['layer1'].style.posLeft = x1-5;
        document.all['layer1'].style.posTop = y1-5;
        document.all['layer1'].style.width = w+10;
        document.all['layer1'].style.height= h+10;
    }

    if (document.layers && document.layers['layer1'] != null)
        document.layers['layer1'].visibility = 'visible';
    else if (document.all)
        document.all['layer1'].style.visibility = 'visible';
}

function hide() {
    if (document.layers && document.layers['layer1'] != null)
        document.layers['layer1'].visibility = 'hidden';
    else if (document.all)
        document.all['layer1'].style.visibility = 'hidden';
}