function OpenWindow( sUri, iWidth, iHeight )
		{
			var sWindowName = 'win' + Math.floor( Math.random()*1000 )
			var iRealWidth = iWidth ? iWidth : 600
			var iRealHeight = iHeight ? iHeight : screen.height - 300
			var iLeft = Math.round( (screen.width-iRealWidth)/2 )
			var iTop =  Math.round( (screen.height-iRealHeight)/2 ) - 35
			var sWindowOptions = 'status=yes,menubar=no,toolbar=no'
			sWindowOptions += ',resizable=yes,scrollbars=yes,location=no'
			sWindowOptions += ',width='  + iRealWidth
			sWindowOptions += ',height=' + iRealHeight
			sWindowOptions += ',left='   + iLeft
			sWindowOptions += ',top='    + iTop
			var oWindow = window.open( sUri, sWindowName, sWindowOptions )
			oWindow.focus()
			return oWindow;
		}
// chatirc
 function ouvre() 
 { 
 window.open("chatirc_pop.php", "Autrepage", "toolbar=0, location=0, directories=0, status=1, scrollbars=0, resizable=0, copyhistory=0"); 
 }