function validate(frm1)
{	if(frm1.name.value==""){
		alert("Please enter your name");
		frm1.name.focus();
		return false;
	}
	if(frm1.address.value=="")
	{
		alert("Please enter your address");
		frm1.address.focus();
		return false;
	}
	if(frm1.phone.value=="")
	{
		alert("Please enter your phone number");
		frm1.phone.focus();
		return false;
	}
	if(frm1.email.value == "")
	{
		alert("Please enter your email id");
		frm1.email.focus();
		return false;
	}
	if(frm1.email.value != "")
	{
		if (!isEmail(frm1.email.value))
		{
			alert("Please enter your valid email id");
			frm1.email.focus();
			return false;
		}
	}		
}

function isNum(fld)
{
	return checkfld(fld,"0123456789- ");
}

function checkfld(fld,str1)
{
	str=new String(str1);
	if (fld.value.length==0) return true;
	for (var i=0;i<fld.value.length;i++)
	{
		found=false;
		for (var j=0;j<str.length;j++)
			if((fld.value.substring(i,i+1))==(str.substring(j,j+1)))
			{
				found=true;
				break;
	        }
		if (!found)
		{
			return false;
		}
    }
	return true;
}

function isEmail(obj)
{	
	str = obj;
	var filter=/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i
	if (!filter.test(str))
	{
		return false;
	}
	return true;
}