function open_popup() 
{
//window.open('ZIMA_2007.pdf','_blank','width=830,height=700,menubar=0,titlebar=0,toolbar=0,scrollbars=1, resizable=1,left=0,top=0');
window.open('oglasevanje/zima2007.html','_blank','width=640,height=500,menubar=0,titlebar=0,toolbar=0,scrollbars=0, resizable=0,left=0,top=0');
//window.open('oglasevanje/damaizbira.php','_blank','width=640,height=680,menubar=0,titlebar=0,toolbar=0,scrollbars=0, resizable=0,left=0,top=0');
}