// JavaScript Document

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function MM_callJS(jsStr) { //v2.0
  return eval(jsStr)
}

// Calculator

function MyCheckEnteredValue(element) {
	var lField = ltrim(rtrim(String(element.value)));
    myReg=new RegExp("^[$]?[0-9]*\\.?[0-9]*$"); 
	if (!(myReg.test(lField) && lField!='.' && lField!='$')) {
		alert("Only numeric values are allowed!");
		element.focus();
		element.select();
		return false;
	}
	return true;
}

function MyCheckEnteredValuePercent(element) {
	var lField = ltrim(rtrim(String(element.value)));
    myReg=new RegExp("^[0-9]*\\.?[0-9]*?$"); 
	if (!(myReg.test(lField) && lField!='.' )) {
		alert("Only numeric values are allowed ");
		return false;
	}

	//100% test
	if (parseFloat(lField)>100) {
		alert("Percentage values must be between 0 and 100!")
		return false;
	}
	return true;
}

function rtrim(argvalue) {
  while (1) {
    if (argvalue.substring(argvalue.length - 1, argvalue.length) != " ")
      break;
    argvalue = argvalue.substring(0, argvalue.length - 1);
  }
  return argvalue;
}

function ltrim(argvalue) {
  while (1) {
    if (argvalue.substring(0, 1) != " ")
      break;
    argvalue = argvalue.substring(1, argvalue.length);
  }
    return argvalue;
}

function round(number)
{
  return Math.round(number*Math.pow(10,2))/Math.pow(10,2);
}



function dosum()
{   frm = document.MortgageSolutions;
	var mi = frm.IR.value / 1200;  
	var counter = 1;  
	var mcounter = 1 + mi;  
	for (i=0; i<frm.YR.value * 12; i++)  
	{   
		counter = counter * mcounter  
	}
	
	frm.PI.value = "$ " + round(frm.LA.value * mi / ( 1 - (1/counter)))  
	frm.MT.value = "$ " + round(frm.AT.value / 12)  
	frm.MI.value = "$ " + round(frm.AI.value / 12)  
	var dasum = frm.LA.value * mi / ( 1 - (1/counter)) + frm.AT.value / 12 + frm.AI.value / 12;
    frm.MP.value = "$ " + round(dasum);
}