function ext_check(f)	{
	var count_emp=0;
	var count_elem=0;
	for(var i=0;i<f.length;i++){
		switch(f.elements[i].type){
			case "select-multiple":
				if(f.elements[i].selectedIndex<0){count_emp++;}
				count_elem++;
				break;
			case "text":
				if(f.elements[i].value==""){count_emp++;}
				count_elem++;
				break;
		}
	}
	if (count_emp==count_elem) {
		alert("  ");
		return false;
	} else {return true;}
}

function sel_all(c){
	var temp;
	for(var i=0;i<c.form.length;i++){
		if(c.form.elements[i].name==c.name){temp=i;break;}
	}
	if(c.checked)	{
		for(var j=0;j<c.form.elements[temp+1].length;j++){
			c.form.elements[temp+1].options[j].selected=1;
		}
	} else {
		for(var j=0;j<c.form.elements[temp+1].length;j++){
			c.form.elements[temp+1].options[j].selected=0;
		}
	}
	if(c.form.elements[temp+1].name=='District[]'){
		if(!(c.checked)){c.form.elements["Is_Area"].checked=0;}
		sel_area(c.form.elements[temp+1]);
	}
}

function check_all(cat){
	for(var i=0;i<cat.form.length;i++){
		if(cat.form.elements[i].name==cat.name){temp=i;break;}
	}
	for(var i=0;i<cat.length;i++){
		if(!(cat.options[i].selected)){cat.form.elements[temp-1].checked=0;break}
	}
}

function fast_check(f)	{
	for(var i=0;i<f.length;i++){
		if(f.elements[i].selectedIndex==""){
			alert(" ");
			f.elements[i].focus();
			return false;
		}
	}
	return true;
}