function chg_img(img, r_img, t_img)
{
img.src = img.src.replace(t_img, r_img);
}
function image_zoom(img_big, description)
{
var temp = new Image();
temp.src=img_big;
var page = ''+
''+
''+
''+
' |
'+
'| '+description+' |
'+
'
'+
'' +
'';
var attribs = ',' + "menubar=0,location=0,toolbar=0,status=0,scrollbars=0,resizable=0, width=100,height=100";
var wind = window.open('','_blank',attribs);
wind.document.open();
wind.document.write(page);
wind.document.close();
}