function raschet()
{
	valuta = document.step1.valuta.value;
	how_money=document.step1.how_money.value;
	
	switch(valuta) 
	{
	case 'WMZ':
		if (how_money=="wm2money")
		{
			if (document.step1.summa.value>99)
			{
				wmz_buy=document.step1.wmz_buy.value*100*document.step1.summa.value/100;
			}
			else 
			{
				wmz_buy=document.step1.wmz_buy.value*100*document.step1.summa.value/100;
				wmz_buy=(wmz_buy*100-document.step1.wmz_buy.value*100)/100;
			}
			if (wmz_buy>0)
			{
				document.getElementById('summa_out').innerHTML = 'Ваша сумма к получению '+Math.ceil(wmz_buy)+' тенге. ';
			}
		}
		if (how_money=="money2wm")
		{
			if (document.step1.summa.value>99)
			{
				wmz_sale=document.step1.wmz_sale.value*100*document.step1.summa.value/100;
			}
			else 
			{
				wmz_sale=document.step1.wmz_sale.value*100*document.step1.summa.value/100;
				wmz_sale=(wmz_sale*100+document.step1.wmz_sale.value*100)/100;
			}
			if (wmz_sale>0)
			{
				document.getElementById('summa_out').innerHTML = 'Вы должны заплатить '+Math.ceil(wmz_sale)+' тенге. ';
			}
		}
	break;
	}
	if (document.step1.summa.value<=0)
	{
		document.getElementById('summa_out').innerHTML = '';
	}
}