this.windowHandle=null

function openWindow1(site) {
this.windowHandle=window.open(site, 'window',
'width=450,height=400,left=50,top=50,scrollbars=yes,resizable=yes,alwaysRaised=yes')
}
function openWindow2(site) {
this.windowHandle=window.open(site, 'window',
'width=350,height=400,left=50,top=50,scrollbars=yes,resizable=yes,alwaysRaised=yes')
}
function openWindow3(site) {
this.windowHandle=window.open(site, 'window',
'width=580,height=400,left=50,top=50,scrollbars=yes,resizable=yes,alwaysRaised=yes')
}