Compare multiple text fields

Is there anyway to compare multiple text fields. If the values are equal I need to sum up a numerical value associated to the text field. Possible. This is a web based App!

Subject: Compare multiple text fields

var sum1 = 0;var doc=document.forms[0];

if(compareFields(doc.field1,doc.field2)

{

sum1 += parseInt(doc.field1.value);

}

function compareFields(x,y){

if(x.value == y.value)

{

return true;

}

else

{

return false;

}

}