ช่วยดู Code Javascript ให้หน่อยค่ะ ติดปัญหาการ เช็คค่า

function gettext(){
if(document.getElementById('h_input_item').value==''){
alert('item');
return false;

//}else if(document.getElementById('project').value==''){ 
//	alert('project...');
// return false;

}else if(document.getElementById('capacity').value==''){
alert('capacity...');
return false;
//ย้ายไว้ล่าง
}else if(document.getElementById('project').value!=''){ 
 document.form_submit.h_project.value=document.form01.project.value;

}else if(document.getElementById('capacity').value!=''){
document.form_submit.h_capacity.value=document.form02.capacity.value;
}
return true;
}

<script>
function replaces(t){
reloads=t;
//alert (reloads);
window.location = "?project="+t+"&type="+'reload';
}
</script>

<? 
//$re=$_REQUEST["type"]; แทนค่าก็ได้หรือจะเอาตรงๆแบบด้านล่าง
//echo $re;
if($_REQUEST["type"]=='reload'){
?>
this is h_project =
<input name="h_project" type="text" id="h_project" value="<?=$_REQUEST["project"]?>" />

<? }else{ ?>

<input name="project" id="project" type="text" value="" onblur="replaces(this.value);"> //จะทำงานตอน cursor หลุดจากช่อง
<? } ?>

<script>
function replaces(t){
reloads=t;
//alert (reloads);
//document.getElementById('project').value = 'Fred Flinstone';
window.location = "?project="+t+"&type="+'reload';
}
function replaces1(t){
var reloads=t;
document.getElementById('h_project').value = reloads ;

}
</script>

<? 
//********************************** this for reload page *****************************
$re=$_REQUEST["type"];
echo $re;
if($_REQUEST["type"]=='reload'){
?>
this is h_project =
<input name="h_project" type="text" id="h_project" value="<?=$_REQUEST["project"]?>" />

<? }else{ ?>

<input name="project" id="project" type="text" value="" onblur="replaces(this.value);">
<? 
//**************************************************************************************
} ?>

<? 
//********************************** this for reload page *****************************
?>
<br>
this is PROJECT :  
<input name="project" id="project" type="text" value="" onblur="replaces1(this.value);">

<br>
this is H_PROJECT :  
<input name="h_project" type="text" id="h_project" value="" />
<? //************************************************************************************** ?>