this.windowHandle=null
                
function openWindow(site) {
this.windowHandle=window.open(site, 'clients', 'width=600,height=600,left=50,top=50,scrollbars=yes,alwaysRaised=yes')
}
                
function openbigWindow(site) {
window.open(site, 'clients',
'width=640,height=400,left=5,top=5,scrollbars=yes,alwaysRaised=yes,scrollBars=1,resizable=1')
}
                
function closesmallWin() {
if (this.windowHandle!=null) {this.windowHandle.close()}
}