function tci(evt)
{
 var charCode = (evt.which) ? evt.which : event.keyCode
 if (charCode > 31 && (charCode < 48 || charCode > 57))
	return false;

 return true;
}

function tinf()
{
tinf1 = document.getElementById("c1");
if (tinf1.disabled==true)
{
tinf1.disabled=false;
} else {
tinf1.disabled=true;
tinf1.value='';
}
tinf2 = document.getElementById("c2");
if (tinf2.disabled==true)
{
tinf2.disabled=false;
} else {
tinf2.disabled=true;
tinf2.value='';
}
}
function dist1() {
pk1a = document.getElementById("pk1a");
pk1b = document.getElementById("pk1b");
pk2a = document.getElementById("pk2a");
pk2b = document.getElementById("pk2b");
pk3a = document.getElementById("pk3a");
pk3b = document.getElementById("pk3b");
if (pk1a.style.display='none') {
pk1a.style.display='block';
pk1b.style.display='block';
pk2a.style.display='none';
pk2b.style.display='none';
pk3a.style.display='none';
pk3b.style.display='none';
}
}
function dist2() {
pk1a = document.getElementById("pk1a");
pk1b = document.getElementById("pk1b");
pk2a = document.getElementById("pk2a");
pk2b = document.getElementById("pk2b");
pk3a = document.getElementById("pk3a");
pk3b = document.getElementById("pk3b");
if (pk2a.style.display='none') {
pk1a.style.display='none';
pk1b.style.display='none';
pk2a.style.display='block';
pk2b.style.display='block';
pk3a.style.display='none';
pk3b.style.display='none';
}
}

function preloader_och() {
pic1= new Image(); pic1.src="../images/k1a.png";
pic2= new Image(); pic2.src="../images/k2a.png";
pic3= new Image(); pic3.src="../images/k3a.png";
}