// JavaScript Document for order.php


var total_price_rmb = new Array ;
var total_price_eur = new Array ;
var price_per_book = new Array ;
var total_price = new Array ;
var coverdesign_price ;
var i;

function calc_currency(currency)
{
	
	if(currency=="eur") { price_per_book = price_per_book_eur ;  coverdesign_price = coverdesign_price_eur ; symb = "€" ;}
	if(currency=="rmb") { price_per_book = price_per_book_rmb ;  coverdesign_price = coverdesign_price_rmb ;  symb = "¥" ; }
	
	for(var i=0; i<quantity.length; i++)
	{
	total_price[i] = quantity[i] * price_per_book[i] ;
	}

}




function calcul(currency,div_id) //calcul the price for taxi-books
{
	calc_currency(currency);
	
	
if(div_id)
	{
	
		if(document.getElementById("form_amount["+div_id+"]").value >= 0)
		{
			document.getElementById("form_priceperbook["+div_id+"]").disabled=false;
			document.getElementById("form_totalpricebook["+div_id+"]").disabled=false;
			document.getElementById("form_priceperbook["+div_id+"]").value = symb+" "+price_per_book[document.getElementById("form_amount["+div_id+"]").value] ;
			document.getElementById("form_totalpricebook["+div_id+"]").value = symb+" "+total_price[document.getElementById("form_amount["+div_id+"]").value] ;
		}
		
		else
		{
			document.getElementById("form_priceperbook["+div_id+"]").value = "" ;
			document.getElementById("form_totalpricebook["+div_id+"]").value = "" ;
			document.getElementById("form_priceperbook["+div_id+"]").disabled=true;
			document.getElementById("form_totalpricebook["+div_id+"]").disabled=true;
		}
		
	
	}
	
	
	else
	{
		for(div_id=0;div_id<=12;div_id++)
		{
			
	
		if(document.getElementById("form_amount["+div_id+"]").value >= 0)
		{
			document.getElementById("form_priceperbook["+div_id+"]").disabled=false;
			document.getElementById("form_totalpricebook["+div_id+"]").disabled=false;
			document.getElementById("form_priceperbook["+div_id+"]").value = symb+" "+price_per_book[document.getElementById("form_amount["+div_id+"]").value] ;
			document.getElementById("form_totalpricebook["+div_id+"]").value = symb+" "+total_price[document.getElementById("form_amount["+div_id+"]").value] ;
		}
		
		else
		{
			document.getElementById("form_priceperbook["+div_id+"]").value = "" ;
			document.getElementById("form_totalpricebook["+div_id+"]").value = "" ;
			document.getElementById("form_priceperbook["+div_id+"]").disabled=true;
			document.getElementById("form_totalpricebook["+div_id+"]").disabled=true;
		}
		
	
	
			
			
		}
		
		
		
	}
}

function calcul_design(currency) //calcul the price for the cover design
{
	calc_currency(currency);
	if (document.getElementById("form_coverdesign").value > 0)
	{
		document.getElementById("form_designprice").disabled=false;
		document.getElementById("form_designprice").value = symb+" "+coverdesign_price ;
	}

	if (document.getElementById("form_coverdesign").value < 1)
	{
		document.getElementById("form_designprice").disabled=true;
		document.getElementById("form_designprice").value = "" ;
	}

}

function add_more()
{
	for(i=0;i<=12;i++)
	{
		if(document.getElementById("divorder["+i+"]").style.display=="none")
		{
			document.getElementById("divorder["+i+"]").style.display="";
		
		if(i==12)
		{
			document.getElementById('add_more').style.display="none" ;
		}
			break;
		}
		
		
	}	
}


function del_less(del_num)
{
	document.getElementById("divorder["+del_num+"]").style.display="none" ;
	document.getElementById("form_selectcity["+del_num+"]").value="-1" ;
	document.getElementById("form_amount["+del_num+"]").value="-1" ;

	
	if(del_num<=12)
		{
			document.getElementById('add_more').style.display="" ;
		}
}