function openWindow(fileName,width,height,otherParams,winName) {
    //x = (550 - width)/2, y = (400 - height)/2;
    if (screen) {
        y = (screen.availHeight - height)/2+15;
        x = (screen.availWidth - width)/2+15;
    }
	//if (screen.availWidth > 1800) { 
	//	x = ((screen.availWidth/2) - width)/2; 
    //}
    if(!winName)
    	winName="";
    var params = 'width=' + width + ',height=' + height + ',screenX=' + x + ',screenY=' + y + ',top=' + y + ',left=' + x;
    if(otherParams)
    	params += "," + otherParams;
	var newWin = window.open(fileName,winName,params);
	newWin.focus()
}