function Void() {
}

function loadactive(tab, block) {
document.getElementById(tab).style.borderBottom="4px solid #ffff66";	
document.getElementById(tab).style.background="#ffff66";
document.getElementById(block).style.display="block";
}
function tab1() {
	document.getElementById('tab1').style.borderBottom="3px solid #ffff66";
	document.getElementById('tab2').style.borderBottom="2px solid black";
	document.getElementById('tab3').style.borderBottom="2px solid black";
	document.getElementById('tab1').style.background="#ffff66";
	document.getElementById('tab2').style.background="#ffffbb";
	document.getElementById('tab3').style.background="#ffffbb";
	document.getElementById('block1').style.display="block";
	document.getElementById('block2').style.display="none";
	document.getElementById('block3').style.display="none";
}

function tab2() {
	document.getElementById('tab2').style.borderBottom="3px solid #ffff66";
	document.getElementById('tab1').style.borderBottom="2px solid black";
	document.getElementById('tab3').style.borderBottom="2px solid black";
	document.getElementById('tab2').style.background="#ffff66";
	document.getElementById('tab1').style.background="#ffffbb";
	document.getElementById('tab3').style.background="#ffffbb";
	document.getElementById('block1').style.display="none";
	document.getElementById('block2').style.display="block";
	document.getElementById('block3').style.display="none";
}

function tab3() {
	document.getElementById('tab3').style.borderBottom="3px solid #ffff66";
	document.getElementById('tab1').style.borderBottom="2px solid black";
	document.getElementById('tab2').style.borderBottom="2px solid black";
	document.getElementById('tab3').style.background="#ffff66";
	document.getElementById('tab1').style.background="#ffffbb";
	document.getElementById('tab2').style.background="#ffffbb";
	document.getElementById('block1').style.display="none";
	document.getElementById('block2').style.display="none";
	document.getElementById('block3').style.display="block";
}

function infodivover() {
	document.getElementById('infodiv').style.display="Block";
}

function infodivout() {
	document.getElementById('infodiv').style.display="none";
}

function postcalc() {
	var postage=0;
	if(document.form1.location[0].checked)
		{
		if(document.form1.postage[0].checked)
			{
			var prate=0.1;
			var pmin=2.5;
			var pmax=7.5;
			var figp="standard";
			}
			else
			{
			var prate=0.15;
			var pmin=3.5;
			var pmax=25;
			}
		}
	else if(document.form1.location[1].checked)
		{
		if(document.form1.postage[1].checked)
			{
			var prate=0.25;
			var pmin=3.95;
			var pmax=65;
			}
			else
			{
			var prate=0.2;
			var pmin=3.5;
			var pmax=50;
			var figp="standard";
			}
		}
	else if(document.form1.location[2].checked)
		{
		if(document.form1.postage[1].checked)
			{
			var prate=0.30;
			var pmin=5;
			var pmax=75;
			}
			else
			{
			var prate=0.25;
			var pmin=4.25;
			var pmax=65;
			var figp="standard";
			}
		}
		

var figspostage = 0;
	
	switch(parseFloat(document.getElementById('figstotal').value))
		{
			case 0: figspostage=0;
					tempfigpostage=0;
					break
			default: if(parseFloat(document.getElementById('figstotal').value) > 10.00 && figp=="standard")
							{ figspostage=0;
							  tempfigpostage=0;}
							else
							{ figspostage=(parseFloat(document.getElementById('figstotal').value) * prate);
							  if(figspostage <= pmin)
									{ figspostage=pmin; }
							  if(figspostage >= pmax)
									{ figspostage=pmax; }
							  tempfigpostage=parseFloat(document.getElementById('figstotal').value);
							}
		}


temprate=parseFloat(document.getElementById('mainsubtotal').value) * prate;

switch(parseFloat(document.getElementById('mainsubtotal').value))
		{
			case 0: postage=0;
					break
			default: if(temprate <= pmin)
						{ postage=pmin; }
						else
						{ postage=temprate; }
						
						if(temprate >= pmax)
							{ postage=pmax; }		
		}

	

	if(document.form1.location[0].checked)
		{ 
		var psecond=3.75; 
		var psecondmax=12.50;
		var secondpostage=0;
		}
		
	if(document.form1.location[1].checked)
		{ 
		var psecond=4.75; 
		var psecondmax=18;
		var secondpostage=0;
		}
		
	if(document.form1.location[2].checked)
		{ 
		var psecond=5.75; 
		var psecondmax=22.50;
		var secondpostage=0;
		}
		
	if((document.getElementById('secondsubqty').value * psecond) >= psecondmax)
		{
		secondpostage=psecondmax;
		}
		else
		{ 
		secondpostage=document.getElementById('secondsubqty').value * psecond; 
		}
		
		
	document.getElementById('secondposttext').innerHTML="<strong>£" + secondpostage.toFixed(2) + "</strong>";
	document.getElementById('posttext').innerHTML="<strong>£" + postage.toFixed(2) + "</strong>";
	document.getElementById('figpost').innerHTML="<strong>£" + figspostage.toFixed(2) + "</strong>";
	
	var totalpost = parseFloat(secondpostage) + parseFloat(postage) + parseFloat(figspostage);
	document.getElementById('totalpost').innerHTML="<strong>£" + totalpost.toFixed(2) + "</strong>";
	document.getElementById('totalpostage').value=totalpost;
	
	var gtotal = parseFloat(totalpost) + parseFloat(document.getElementById('grandsubtotal').value);
	
	if(document.form1.insure.checked)
		{
		gtotal += 2.5;
		}
	document.getElementById('gtotal').innerHTML="<strong>£" + gtotal.toFixed(2) + "</strong>";
	document.getElementById('grandtotal').value=gtotal;
}