var lwin=null;
var dwin=null;
function testopenwins(){if (lwin && !lwin.closed)lwin.close()}
function testopenwins2(){if (dwin && !dwin.closed)dwin.close()}
function ow(link){
testopenwins();
aw=screen.availWidth;ah=screen.availHeight;
wh=700;
ww=960;
xw=(aw-ww)/2;yw=(ah-wh)/2;
lwin=window.open(link,'_blank','scrollbars=1,statusbar=0,resizable=1,width='+ww+',height='+wh+',left='+xw+',top='+yw);
}
function ow2(){
testopenwins2();
aw=screen.availWidth;ah=screen.availHeight;
wh=600;
ww=800;
xw=(aw-ww)/2;yw=(ah-wh)/2;
dwin=window.open('','_blank','scrollbars=1,statusbar=0,resizable=1,width='+ww+',height='+wh+',left='+xw+',top='+yw);
return dwin;
}