br=(((navigator.appName == "Netscape") &&
(parseInt(navigator.appVersion) >= 3 )) ||
((navigator.appName == "Microsoft Internet Explorer") &&
(parseInt(navigator.appVersion) >= 4 )));

function preload(img) {
var a=new Image(); a.src=img; return a;
}

if(br) {
lm1off=preload('img/left_menu-btn-software.gif'); lm1on=preload('img/left_menu-btn-software-on.gif');
lm2off=preload('img/left_menu-btn-order.gif'); lm2on=preload('img/left_menu-btn-order-on.gif');
lm3off=preload('img/left_menu-btn-download.gif'); lm3on=preload('img/left_menu-btn-download-on.gif');
lm4off=preload('img/left_menu-btn-integration.gif'); lm4on=preload('img/left_menu-btn-integration-on.gif'); 
lm5off=preload('img/left_menu-btn-solutions.gif'); lm5on=preload('img/left_menu-btn-solutions-on.gif');
lm6off=preload('img/left_menu-btn-support.gif'); lm6on=preload('img/left_menu-btn-support-on.gif');
lm7off=preload('img/left_menu-btn-reseller.gif'); lm7on=preload('img/left_menu-btn-reseller-on.gif');
lm8off=preload('img/left_menu-btn-press.gif'); lm8on=preload('img/left_menu-btn-press-on.gif'); 
lm9off=preload('img/left_menu-btn-about_us.gif'); lm9on=preload('img/left_menu-btn-about_us-on.gif');

}