function isEmpty(str)
{
	if(null == str || "" == str)
	{
		return true;
	}
return false;
}

function checkEmail(str)
{
	if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(str))
	{
		return false;
	}
return true;
}

function trim(str)
{
   return str.replace(/^\s+|\s+$/g,'');
}

function checkForm()
{
	var fNamea,lNamea,sphone,iname;
	
	with(window.document.form1)
	{
		fNamea =  fname;
		lNamea =  lname;
		sphone =  pnum;
		iname = insuname;
	}

	if(isEmpty(fNamea.value))
	{
		fNamea.style.background="Yellow";
		window.alert("Please enter your first name");
		fNamea.focus();
		return false;
	}
	else if(isEmpty(lNamea.value))
	{
		lNamea.style.background="Yellow";
		window.alert("Please enter your last name");
		lNamea.focus();
		return false;
	}
	else if(isEmpty(sphone.value))
	{
		sphone.style.background="Yellow";
		window.alert("Please enter phone number");
		sphone.focus();
		return false;
	}
	else if(isNaN(parseInt(sphone.value)))
	{
		sphone.style.background="Orange";
		window.alert("Please enter a valid phone number");
		sphone.focus();
		return false;
	}
	
	/*else if(isEmpty(eId.value))
	{
		eId.style.background="Yellow";
		window.alert("Please enter email id");
		eId.focus();
		return false;
	}
	else if(checkEmail(eId.value))
	{
		eId.style.background="Orange";
		window.alert("Please enter a valid email");
		eId.focus();
		return false;
	}*/
	else if(isEmpty(iname.value))
	{
		iname.style.background="Yellow";
		window.alert("Please enter your Contact name");
		iname.focus();
		return false;
	}
	return true;
}