function validate_login(){
	var error_flag = 0;
	
	if(document.login_form.username.value == ""){
		$("#username").addClass("required_field");
		error_flag = 1;
	}
	
	if(document.login_form.password.value == ""){
		$("#password").addClass("required_field");
		error_flag = 1;
	}
	
	if(error_flag == 0){
		document.login_form.submit();	
	} else {
		document.getElementById("warning").style.display = "block";
	}
}

function validate_request(){
	var error_flag = 0;

	if(document.request.name.value == "" || document.request.name.value == "Enter Text"){
		$("#name").addClass("required_field");
		error_flag = 1;
	}
	
	if(document.request.phone.value == "" || document.request.phone.value == "Enter Text"){
		$("#phone").addClass("required_field");
		error_flag = 1;
	}
	
	if(document.request.email.value == "" || document.request.email.value == "Enter Text"){
		$("#email").addClass("required_field");
		error_flag = 1;
	} else {
		if(!checkEmail(document.request.email.value)){
			$("#email").addClass("required_field");
			error_flag = 1;
		}
	}
	
	if(error_flag == 0){
		document.request.submit();	
	} else {
		document.getElementById("warning").style.display = "block";
	}
}

function clear_form(form){
	eval("document." + form + ".reset()");
}

function validate_design(){
	var error_flag = 0;

	if(document.design.date.value == "" || document.design.date.value == "Enter Text"){
		$("#date").addClass("required_field");
		error_flag = 1;
	}

	if(document.design.project_name.value == "" || document.design.project_name.value == "Enter Text"){
		$("#project_name").addClass("required_field");
		error_flag = 1;
	}
	
	if(document.design.address.value == "" || document.design.address.value == "Enter Text"){
		$("#address").addClass("required_field");
		error_flag = 1;
	}
	
	if(document.design.email.value == "" || document.design.email.value == "Enter Text"){
		$("#email").addClass("required_field");
		error_flag = 1;
	}

	if(document.design.response_time.value == "" || document.design.response_time.value == "Enter Text"){
		$("#response_time").addClass("required_field");
		error_flag = 1;
	}
	
	if(error_flag == 0){
		document.design.submit();	
	} else {
		document.getElementById("alert").style.display = "block";
	}
}

function check_controls_y(textfield){
	var enabled = "document.design." + textfield + ".disabled = false";
	
	eval(enabled);
}

function check_controls_n(textfield){
	var enabled = "document.design." + textfield + ".disabled = true";
	
	eval(enabled);
}

function validate_key(key){
	if(key.keyCode == 13){
		validate_login();	
	}
}

function checkEmail(str) {
	var at="@";
	var dot=".";
	var lat=str.indexOf(at)
	var lstr=str.length
	var ldot=str.indexOf(dot)
	if (str.indexOf(at)==-1){
	   return false
	}

	if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
	   return false
	}

	if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		return false
	}

	 if (str.indexOf(at,(lat+1))!=-1){
		return false
	 }

	 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		return false
	 }

	 if (str.indexOf(dot,(lat+2))==-1){
		return false
	 }
	
	 if (str.indexOf(" ")!=-1){
		return false
	 }

	 return true					
}