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.temps;
	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);
}