function showtext(x){
document.getElementById('t1').style.display='none'
document.getElementById('t2').style.display='none'
document.getElementById('t3').style.display='none'
document.getElementById('t4').style.display='none'
document.getElementById('t5').style.display='none'

document.getElementById(x).style.display='block'
}

function MM_swapImage2(x){

document.getElementById('ima1').style.display='none'
document.getElementById('ima2').style.display='none'
document.getElementById('ima3').style.display='none'
document.getElementById('ima4').style.display='none'
document.getElementById('ima5').style.display='none'

document.getElementById(x).style.display='block'



}