function trim(thisString){
var newString = thisString;
while (newString.charCodeAt(0) < 33)
{
newString = newString.substring(1,newString.length);
}
while (newString.charCodeAt(newString.length - 1) < 33)
{
newString = newString.substring(0, newString.length - 1);
}
return newString;
}
// Validate that a list of fields contain a value (leading and traling spaces are removed)
// First paramter: the form reference. If your form name is "ServiceForm", then pass "document.ServiceForm"
// Second Parameter: A pipe delimited list of field names (case senastive)
// Third Parameter: A pipe delimited list of field descriptions
//
function ValidateRequiredFields(thisform,Fields,Desc)
{
var tmpVal='';
var FieldArray=new Array();
var DescArray=new Array();
var tmp=0;
// Create array for Field list
tmpVal=Fields;
do
{
tmp=tmpVal.indexOf('|');
if (tmp == -1)
{
if (tmpVal != '')
{
FieldArray[FieldArray.length]=tmpVal;
tmpVal='';
}
} else {
FieldArray[FieldArray.length]=tmpVal.substring(0,tmp);
tmpVal=tmpVal.substring(tmp + 1);
}
}
while (tmpVal != '');
// Create array for Desc list
tmpVal=Desc;
do
{
tmp=tmpVal.indexOf('|');
if (tmp == -1)
{
if (tmpVal != '')
{
DescArray[DescArray.length]=tmpVal;
tmpVal='';
}
} else {
DescArray[DescArray.length]=tmpVal.substring(0,tmp);
tmpVal=tmpVal.substring(tmp + 1);
}
}
while (tmpVal != '');
// Check to see if passed strings are of equal length
if (FieldArray.length != DescArray.length)
{
alert('Fatal error: ValidateRequiredFields - Passed lists do not have the same length');
return false;
}
// Validate fields
for (i=0; i < DescArray.length; i++)
{
eval('tmpVal=thisform.' + FieldArray[i] + '.value');
if (trim(tmpVal) == '')
{
alert(DescArray[i] + ' is required.');
eval('thisform.' + FieldArray[i] + '.focus()');
return false;
}
}
return true;
}