function openwindow1() {
         window.open("map_1.html","window1","width=600,height=580");
}

function openwindow2() {
         window.open("map_2.html","window2","width=400,height=560");
}

function openwindow3() {
         window.open("map_3.html","window3","width=600,height=580");
}


function cls()
{

close();
}