function showsection(var1){

if( document.getElementById ) {

if( var1 == 's1' ) {
document.getElementById('s1').style.display = "block";
document.getElementById('s1c').style.display = "block";
document.getElementById('s2').style.display = "none";
document.getElementById('s2c').style.display = "none";
document.getElementById('s3').style.display = "none";
document.getElementById('s3c').style.display = "none";
document.getElementById('s4').style.display = "none";
document.getElementById('s4c').style.display = "none";
document.getElementById('s5').style.display = "none";
document.getElementById('s5c').style.display = "none";
document.getElementById('s6').style.display = "none";
document.getElementById('s6c').style.display = "none";
document.getElementById('s7').style.display = "none";
document.getElementById('s7c').style.display = "none";
document.getElementById('s8').style.display = "none";
document.getElementById('s8c').style.display = "none";
}

if( var1 == 's2' ) {
document.getElementById('s1').style.display = "none";
document.getElementById('s1c').style.display = "none";
document.getElementById('s2').style.display = "block";
document.getElementById('s2c').style.display = "block";
document.getElementById('s3').style.display = "none";
document.getElementById('s3c').style.display = "none";
document.getElementById('s4').style.display = "none";
document.getElementById('s4c').style.display = "none";
document.getElementById('s5').style.display = "none";
document.getElementById('s5c').style.display = "none";
document.getElementById('s6').style.display = "none";
document.getElementById('s6c').style.display = "none";
document.getElementById('s7').style.display = "none";
document.getElementById('s7c').style.display = "none";
document.getElementById('s8').style.display = "none";
document.getElementById('s8c').style.display = "none";
}

if( var1 == 's3' ) {
document.getElementById('s1').style.display = "none";
document.getElementById('s1c').style.display = "none";
document.getElementById('s2').style.display = "none";
document.getElementById('s2c').style.display = "none";
document.getElementById('s3').style.display = "block";
document.getElementById('s3c').style.display = "block";
document.getElementById('s4').style.display = "none";
document.getElementById('s4c').style.display = "none";
document.getElementById('s5').style.display = "none";
document.getElementById('s5c').style.display = "none";
document.getElementById('s6').style.display = "none";
document.getElementById('s6c').style.display = "none";
document.getElementById('s7').style.display = "none";
document.getElementById('s7c').style.display = "none";
document.getElementById('s8').style.display = "none";
document.getElementById('s8c').style.display = "none";
}

if( var1 == 's4' ) {
document.getElementById('s1').style.display = "none";
document.getElementById('s1c').style.display = "none";
document.getElementById('s2').style.display = "none";
document.getElementById('s2c').style.display = "none";
document.getElementById('s3').style.display = "none";
document.getElementById('s3c').style.display = "none";
document.getElementById('s4').style.display = "block";
document.getElementById('s4c').style.display = "block";
document.getElementById('s5').style.display = "none";
document.getElementById('s5c').style.display = "none";
document.getElementById('s6').style.display = "none";
document.getElementById('s6c').style.display = "none";
document.getElementById('s7').style.display = "none";
document.getElementById('s7c').style.display = "none";
document.getElementById('s8').style.display = "none";
document.getElementById('s8c').style.display = "none";
}

if( var1 == 's5' ) {
document.getElementById('s1').style.display = "none";
document.getElementById('s1c').style.display = "none";
document.getElementById('s2').style.display = "none";
document.getElementById('s2c').style.display = "none";
document.getElementById('s3').style.display = "none";
document.getElementById('s3c').style.display = "none";
document.getElementById('s4').style.display = "none";
document.getElementById('s4c').style.display = "none";
document.getElementById('s5').style.display = "block";
document.getElementById('s5c').style.display = "block";
document.getElementById('s6').style.display = "none";
document.getElementById('s6c').style.display = "none";
document.getElementById('s7').style.display = "none";
document.getElementById('s7c').style.display = "none";
document.getElementById('s8').style.display = "none";
document.getElementById('s8c').style.display = "none";
}

if( var1 == 's6' ) {
document.getElementById('s1').style.display = "none";
document.getElementById('s1c').style.display = "none";
document.getElementById('s2').style.display = "none";
document.getElementById('s2c').style.display = "none";
document.getElementById('s3').style.display = "none";
document.getElementById('s3c').style.display = "none";
document.getElementById('s4').style.display = "none";
document.getElementById('s4c').style.display = "none";
document.getElementById('s5').style.display = "none";
document.getElementById('s5c').style.display = "none";
document.getElementById('s6').style.display = "block";
document.getElementById('s6c').style.display = "block";
document.getElementById('s7').style.display = "none";
document.getElementById('s7c').style.display = "none";
document.getElementById('s8').style.display = "none";
document.getElementById('s8c').style.display = "none";
}

if( var1 == 's7' ) {
document.getElementById('s1').style.display = "none";
document.getElementById('s1c').style.display = "none";
document.getElementById('s2').style.display = "none";
document.getElementById('s2c').style.display = "none";
document.getElementById('s3').style.display = "none";
document.getElementById('s3c').style.display = "none";
document.getElementById('s4').style.display = "none";
document.getElementById('s4c').style.display = "none";
document.getElementById('s5').style.display = "none";
document.getElementById('s5c').style.display = "none";
document.getElementById('s6').style.display = "none";
document.getElementById('s6c').style.display = "none";
document.getElementById('s7').style.display = "block";
document.getElementById('s7c').style.display = "block";
document.getElementById('s8').style.display = "none";
document.getElementById('s8c').style.display = "none";
}

if( var1 == 's8' ) {
document.getElementById('s1').style.display = "none";
document.getElementById('s1c').style.display = "none";
document.getElementById('s2').style.display = "none";
document.getElementById('s2c').style.display = "none";
document.getElementById('s3').style.display = "none";
document.getElementById('s3c').style.display = "none";
document.getElementById('s4').style.display = "none";
document.getElementById('s4c').style.display = "none";
document.getElementById('s5').style.display = "none";
document.getElementById('s5c').style.display = "none";
document.getElementById('s6').style.display = "none";
document.getElementById('s6c').style.display = "none";
document.getElementById('s7').style.display = "none";
document.getElementById('s7c').style.display = "none";
document.getElementById('s8').style.display = "block";
document.getElementById('s8c').style.display = "block";
}


}}



// <div id="s1" style="display:block;"><p>1111111111111111111111111111<br />this is the first section<br />111111111111111111111111111111</p></div>

// <a href="javascript:showsection('s1');">1</a>