function CheckEnteredValue(element) { 
var lField = ltrim(rtrim(String(element.value))); 

myReg=new RegExp("^[0-9]*\\.?[0-9]*$"); 
	if (!(myReg.test(lField) && lField!='.')) { 
		alert("Please enter valid numerical data in all fields!"); 

		return false; 
	} 

element.value=lField; 
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 trim(str) 
{ 
return str.replace(/^\s+/g, '').replace(/\s+$/g, ''); 
} 

function count(form) 
{ 
var tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7, tmp8, tmp9, tmp10, tmp11 
 if ( trim(document.getElementById("income").value) != "" && trim(document.getElementById("other").value) != "" && trim(document.getElementById("taxes").value) != "" && trim(document.getElementById("insurance").value) != "" && trim(document.getElementById("auto").value) != "" && trim(document.getElementById("cards").value) != "" && trim(document.getElementById("term").value) != "" && trim(document.getElementById("rate").value) != ""){ 

  tmp12 = Math.round(eval(document.getElementById("income").value * .28) + eval(document.getElementById("other").value * .28) - document.getElementById("taxes").value - document.getElementById("insurance").value); 

  tmp13 = Math.round(eval(document.getElementById("income").value * .36) + eval(document.getElementById("other").value * .36) - document.getElementById("taxes").value - document.getElementById("insurance").value - document.getElementById("auto").value - document.getElementById("cards").value); 

   if (tmp12>tmp13) { 
   document.getElementById("payment").value = tmp13 
   } 
   else { 
   document.getElementById("payment").value = tmp12 
   } 

   tmp1 = parseFloat(document.getElementById("rate").value); 
   if (isNaN(tmp1)) tmp1=0; 
   tmp2 = parseFloat(document.getElementById("term").value); 
   if (isNaN(tmp2)) tmp2=0; 
   tmp3 = parseFloat(document.getElementById("payment").value); 
   if (isNaN(tmp3)) tmp3=0; 
   tmp4 = parseFloat(tmp1 / 1200); 
   tmp5 = parseFloat(tmp2 * 12); 
   tmp6 = parseFloat(1 + tmp4); 
   tmp7 = parseFloat(Math.pow(tmp6, tmp5)); 
   tmp8 = parseFloat(1 / tmp7); 
   tmp9 = parseFloat(1 - tmp8); 
   tmp10 = parseFloat(tmp9 / tmp4); 
   tmp11 = parseFloat(tmp3 * tmp10); 
   form.amount.value = Math.round(tmp11); 

   } 
else 
   { 
     alert("Please enter valid numerical data in all fields!"); 
     return false; 
   } 
}