<script>
function aa()
{
var t1=parseInt(document.form1.text1.value)
var t2=parseInt(document.form1.text2.value)
var t3=parseInt(document.form1.text3.value)
var t4=parseInt(document.form1.text4.value)
if(t1!=""|t2!=""|t3!=""|t4!="")
{
var t5=0
document.form1.text5.value=t1+t2+t3+t4+t5
var t5=document.form1.text5.value
}
}
function my_count(){
document.all.text_total.value=parseFloat(document.all.text1.value)+parseFloat(document.all.text2.value)+parseFloat(document.all.text3.value);
}