function showit(wwidth,wheight,wname) {
    if (wwidth == 0 || wheight == 0)
        showPlace = open("",wname);
    else                
     {  
     if ( wwidth >770 || wheight >  610 ) 
        showPlace = open("",wname); 
     else
        showPlace = open("",wname,"width="+wwidth+",height="+wheight+",resizable=no,scrollbars=no");
     }
}