function toggle_visibility(id) {
   var e = document.getElementById(id);
   if(e.style.display == 'block')
      e.style.display = 'none';
   else
      e.style.display = 'block';
}
    
var choose = false;
function switch1(div, trigger, info) {
	
	if(trigger == true){
		var shipping = 275;
		calculate_total(shipping,'Shipping');	
		choose = true;
	}
	if(trigger == false){
		if(choose == true){
			choose = false;
			var shipping = -275;
			calculate_total(shipping, '');	
		}
		if(choose == false){
			choose = false;
		}
	}
	
	//if (document.getElementById(info)){
		//var info = document.getElementById(info);
		if(info == 'a'){
			document.getElementById('a').setAttribute("style","display: block;font-size: 1.4em; width: 400px; margin-top:100px; float:left;");
			document.getElementById('b').setAttribute("style","display: none;");
			document.getElementById('c').setAttribute("style","display: none;");
		}else if(info == 'b'){
			document.getElementById('a').setAttribute("style","display: none;");
			document.getElementById('b').setAttribute("style","display: block;font-size: 1.4em; width: 400px; margin-top:100px; float:left;");
			document.getElementById('c').setAttribute("style","display: none;");
		}else if(info == 'c'){
			document.getElementById('a').setAttribute("style","display: none;");
			document.getElementById('b').setAttribute("style","display: none;");
			document.getElementById('c').setAttribute("style","display: block;font-size: 1.4em; width: 400px; margin-top:100px; float:left;");
		}
		
		
		
//}
	
	if (document.getElementById('one')){
		
		var option=['one','two'];
		for(var i=0; i<option.length; i++){ 
			
			obj=document.getElementById(option[i]);
			obj.style.display=(option[i]==div)? "block" : "none"; 
				
			var mail = document.getElementById('mail');
			mail.style.display=(option[i]==div)? "block" : "none";
			
			//if(option[i] == div){
			//var shipping = (option[1] == div) ? -275 : 275;
		
		
		}
	}	
}

function calculate_total(shipping, shiptext){
	var total = document.getElementById('total');
	var ship_text = document.getElementById('ship_text');
	sum = total.innerHTML;
	values = sum.split(",");
	sum = values[0]+values[1];
	sum = parseFloat(sum);
	sum = sum + shipping;
	sum = sum.toFixed(2);
	
	sum = formatCommas(sum);
	total.innerHTML=sum;
	ship_text.innerHTML=shiptext;
	
}

function formatCommas(numString) {
    var re = /(-?\d+)(\d{3})/;
    while (re.test(numString)) {
        numString = numString.replace(re, "$1,$2");
    }
    return numString;
}

function hide(id) {
	var element = document.getElementById(id);
	element.style.display = "none";	
}

function show(id) {
	var element = document.getElementById(id);
	element.style.display = "block";
	element.focus ();
	element.select ();	
}

function mark_text(id){
	var text_input = document.getElementById (id);
	text_input.focus ();
	text_input.select ();
}