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// Копирайт © Citicorp 2002-2005

// convert string to integer
function toInt(str)
{
	str = str.replace(" ", "")
	str = str.replace(".", "")
	str = str.replace(",", "")
	if ( str )  {  ff = parseInt( str, 10 )  }
	if ( !str || isNaN(str) || isNaN(ff) || !ff )  {  ff = 0  }
	return ff
}

function clear_all()
{
	for( i=1; i<=4; i++ )
	{
		obj = document.getElementById( "bar"+i  )
		obj.height = 0
		obj = document.getElementById( "sum"+i  )
		obj.innerHTML = ""
		obj = document.getElementById( "tsum"+i  )
		obj.innerHTML = ""
	}
}

function format(str)
{
	len = str.length
	if ( len > 3 )
	{
		str = str.substring(0, len-3) + " " + str.substring( len-3, len )
	}
	return str
}

function сalc( lang )
{
	
	obj = document.getElementById("amount")
	LA = toInt( obj.value )

	
	if ( LA < 1800 )
	{
		if ( lang == "eng" )
		{  alert("Minimum amount of purchase - 1800 RUB")  }
		else
		{  alert("Минимальная сумма покупки - 1800 рублей")  }
		LA = 1800
	}
	
	if ( LA > 999999 )
	{
		obj = document.getElementById("loan_amount")
		if ( lang == "eng" )
			alert("Too big amount")  
		else
			alert("Вы указали слишком большую сумму покупки.")  
		LA = 50000
	}

	clear_all()

	obj = document.getElementById("loan_amount")
	if ( lang == "eng" )
	{  obj.innerHTML = format( LA + "" ) + " RUB"  }
	else
	{  obj.innerHTML = format( LA + "" ) + " руб."  }
	
	obj = document.getElementById("graph")
	obj.style.display = "block"


	ARR_PMT = new Array()
	ARR_Tenor = new Array( 0, 12, 18, 24, 36 )
	ARR_IR = new Array( 0, 0.28, 0.275, 0.27, 0.265 )
	maxPMT = 0
	
	for( i=1; i<ARR_Tenor.length; i++ )
	{
		ARR_PMT[i] = Math.round( ( LA * ARR_IR[i] / 12 ) / ( 1 - Math.pow( 1 + ARR_IR[i]/12, -ARR_Tenor[i] ) ) )
		//if ( ARR_PMT[i] <150 )  {  ARR_PMT[i] = 0  }
		if ( ARR_PMT[i] > maxPMT )  {  maxPMT = ARR_PMT[i]  }
	}

	//if ( LA < 3600 )
	//{
	//	ARR_PMT[2] = 0
	//	ARR_PMT[3] = 0
	//	ARR_PMT[4] = 0
	//}

	if ( maxPMT )
	{
		ky = 100 / maxPMT
	}
	else
	{
		ky = 0.25
	}

	for( i=1; i<ARR_Tenor.length; i++ )
	{
		if ( ARR_PMT[i]  > 0 )
		{
			obj = document.getElementById( "bar"+i )
			obj.height = Math.round( ARR_PMT[i] * ky )
			obj = document.getElementById( "sum"+i )
			if ( lang == "eng" )
			{  
				obj.innerHTML = "&nbsp; <b>" + Math.round( ARR_PMT[i] )  + "</b> RUB"
				obj = document.getElementById( "tsum"+i )
				obj.innerHTML = "&nbsp; <b>" + format( "" + Math.round( ARR_PMT[i] ) )  + "</b> RUB"
				obj = document.getElementById( "tir"+i )
				obj.innerHTML = "<b>"+Math.round( ARR_IR[i]*1000 )/10  + "%</b>"
				obj = document.getElementById( "gt"+i )
				obj.innerHTML = "<b>"+Math.round( ARR_IR[i]*1000 )/10  + "%</b><br>p.a."
			}
			else
			{  
				obj.innerHTML = "&nbsp; <b>" + Math.round( ARR_PMT[i] )  + "</b> р."
				obj = document.getElementById( "tsum"+i )
				obj.innerHTML = "&nbsp; <b>" + format( "" + Math.round( ARR_PMT[i] ) )  + "</b> р."
				obj = document.getElementById( "tir"+i )
				obj.innerHTML = "<b>"+Math.round( ARR_IR[i]*1000 )/10  + "%</b>"
				obj = document.getElementById( "gt"+i )
				obj.innerHTML = "<b>"+Math.round( ARR_IR[i]*1000 )/10  + "%</b><br>годовых"
			}
		}
		else
		{
			obj = document.getElementById( "bar"+i )
			obj.height = 0
			obj = document.getElementById( "sum"+i )
			obj.innerHTML = ""
			obj = document.getElementById( "tsum"+i )
			obj.innerHTML = "-"
		}
	}


}

//-->

