function ShowContent(tabid)
{
var tabImgPath = "http://atl.img.digitalriver.com/v2.0-img/operations/microsoft/431535/pd-images/tab-";
var content_pd = document.getElementById("content-pd");
var content_compare = document.getElementById("content-compare");
var content_sysreqs = document.getElementById("content-sysreqs");
var content_suite = document.getElementById("content-suite");

var tab_pd = document.getElementById("tab-pd");
var tab_compare = document.getElementById("tab-compare");
var tab_sysreqs = document.getElementById("tab-sysreqs");
var tab_suite = document.getElementById("tab-suite");

var tab_bg = document.getElementById("tab-bg");

content_pd.style.display = "none";
content_compare.style.display = "none";
content_sysreqs.style.display = "none";
content_suite.style.display = "none";
tab_pd.src = tabImgPath + "pd-off.gif";
tab_compare.src = tabImgPath + "compare-off.gif";
tab_sysreqs.src = tabImgPath + "sysreqs-off.gif";
tab_suite.src = tabImgPath + "suite-off.gif";

document.getElementById("tab-" + tabid).src = tabImgPath + tabid + "-on.gif";
document.getElementById("content-" + tabid).style.display = "block";

if (tabid == "pd")
{
tab_bg.style.backgroundPosition = "-470px 0";
}
else if (tabid == "compare")
{
tab_bg.style.backgroundPosition = "-370px 0";
}
else if (tabid == "sysreqs")
{
tab_bg.style.backgroundPosition = "-243px 0";
}
else if (tabid == "suite")
{
tab_bg.style.backgroundPosition = "-133px 0";
}
}