function open_compare_a(product_id) {
	wnd_a = window.open( '/compare.php?okno=a&action=add&id=' + product_id,  '_compare_a' ); 
	wnd_a.focus();
}
function open_compare_b(product_id) {
	wnd_b = window.open( '/compare.php?okno=b&action=add&id=' + product_id,  '_compare_b' ); 
	wnd_b.focus();
}
function open_compare_c(product_id) {
	wnd_c = window.open( '/compare.php?okno=c&action=add&id=' + product_id,  '_compare_c' ); 
	wnd_c.focus();
}
function open_compare_d(product_id) {
	wnd_d = window.open( '/compare.php?okno=d&action=add&id=' + product_id,  '_compare_d' ); 
	wnd_d.focus();
}
function open_compare_e(product_id) {
	wnd_e = window.open( '/compare.php?okno=e&action=add&id=' + product_id,  '_compare_e' ); 
	wnd_e.focus();
}
function open_compare_f(product_id) {
	wnd_f = window.open( '/compare.php?okno=f&action=add&id=' + product_id,  '_compare_f' ); 
	wnd_f.focus();
}
function open_compare_g(product_id) {
	wnd_g = window.open( '/compare.php?okno=g&action=add&id=' + product_id,  '_compare_g' ); 
	wnd_g.focus();
}
function open_compare1(product_id, okno) {
	//alert('product_id = '+product_id);
	wnd = window.open( 'compare.php?okno='+okno +'&action=del&id=' + product_id,  '_compare_'+okno ); 
	wnd.focus();
}