// JavaScript Document
function validation()
{
e=document.texla;

	if(e.name.value=="")
	{
		alert("Please enter Your name");
		e.name.focus();
		return false;
	}
	var nam=e.name.value;
	if(isvalnumAlpha(nam)!=true)
	{
		alert("PLEASE ENTER VALID NAME!");
		e.name.focus();
		e.name.select();
		return false;
	}
	if(e.telephone.value=="")
	{
	alert("Please enter your Phone No");
	e.telephone.focus();
	return false;
	}
	if(e.email.value=="")
	{
	alert("Please enter your E-Mail id");
	e.email.focus();
	return false;
	}
	var em=e.email.value;
	if((em.indexOf('@',0)==-1)||(em.indexOf('.',0)== -1))
	{ alert("PLEASE ENTER VALID E-MAIL!");
	e.email.focus();
	e.email.select();
	 return false;
	}
	if(e.comments.value=="")
	{
	alert("Please enter your Comments");
	e.comments.focus();
	return false;
	}
	}
function isvalnumAlpha(data)
	{ var numStr="1234567890-=\~!@#$%^*()_+|?><:{},";
	var thisChar;
	var counter=0;
	for(var i=0; i < data.length; i++)
		{
			thisChar=data.substring(i,i+1);
			if(numStr.indexOf(thisChar)==-1)
			{counter++;}
		}
		if(counter==data.length)
		{return true;}
		else
		return false;
}


function isNumber(data)
{
	var numStr="1234567890-_";
	var thisChar;
	var counter=0;
	for(var i=0; i < data.length; i++)
		{
			thisChar=data.substring(i,i+1);
			if(numStr.indexOf(thisChar)!=-1)
			{counter++;}
		}
		if(counter==data.length)
		{return true;}
		else
		return false;
 }