function frm_check(){
	var file = document.getElementById( "file" ).value;
	if( file == "" ){
		alert( " Please choose one upload files please ! " );
		return false;
	}else{
		str = file.replace( /.*\./,'' );
		str = str.toLowerCase();
		if( str == "xls" || str == "xlsx" || str == "txt" ){
			return true;
		}else{
			alert( " Please choose execl or txt files to upload please ! " );
			return false;
		}
	}
}

function setDivHeight_home( )
{
	tmp_height = document.getElementById("main_middle").scrollHeight;
	if( tmp_height > 700 )
	document.getElementById( "main_content_subscibe" ).style.height = tmp_height+50+"px";	
}

function login_frm_check(){
	var id = document.getElementById( "name" ).value;
	var pwd = document.getElementById( "pwd" ).value;

	if( id == "" || pwd == "" ){
		alert( "input you account and password please !" );
		return false;
	}else{
		return true;
	}
}