function showpic1(){
placeholder1 = document.getElementById(1);
placeholder1.setAttribute("src","fileadmin/template/main/images/icons/icon_select-04.gif");
document.getElementById("c_imgnavtxt").innerHTML="<img src=\"fileadmin/template/main/images/pijl_RB.gif\" /> exhibition info";
}
function hidepic1(){
placeholder1 = document.getElementById(1);
placeholder1.setAttribute("src","fileadmin/template/main/images/icons/icon-04.gif");
document.getElementById("c_imgnavtxt").innerHTML="&nbsp;";
}

function showpic2(){
placeholder2 = document.getElementById(2);
placeholder2.setAttribute("src","fileadmin/template/main/images/icons/icon_select-05.gif");
document.getElementById("c_imgnavtxt").innerHTML="<img src=\"fileadmin/template/main/images/pijl_RB.gif\" /> merchandise";
}
function hidepic2(){
placeholder2 = document.getElementById(2);
placeholder2.setAttribute("src","fileadmin/template/main/images/icons/icon-05.gif");
document.getElementById("c_imgnavtxt").innerHTML="&nbsp;";
}

function showpic3(){
placeholder3 = document.getElementById(3);
placeholder3.setAttribute("src","fileadmin/template/main/images/icons/icon_select-06.gif");
document.getElementById("c_imgnavtxt").innerHTML="<img src=\"fileadmin/template/main/images/pijl_RB.gif\" /> exhibition overview";
}
function hidepic3(){
placeholder3 = document.getElementById(3);
placeholder3.setAttribute("src","fileadmin/template/main/images/icons/icon-06.gif");
document.getElementById("c_imgnavtxt").innerHTML="&nbsp;";
}