function echeck(str) {

		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if(str.indexOf(at)==-1){
		   alert("Invalid E-mail ID")
		   return false
		}

		if(str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("Invalid E-mail ID")
		   return false
		}

		if(str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    alert("Invalid E-mail ID")
		    return false
		}

		 if(str.indexOf(at,(lat+1))!=-1){
		    alert("Invalid E-mail ID")
		    return false
		 }

		 if(str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert("Invalid E-mail ID")
		    return false
		 }

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

 		 return true					
	}


function form_validate()
{
if(document.frm.txt_name.value=='')
{
alert('Please Fill Name');
document.frm.txt_name.focus();
return false;
}

if(document.frm.txt_phone.value=='')
{
alert('Please Fill Phone No');
document.frm.txt_phone.focus();
return false;
}

if(document.frm.txt_adds.value=='')
{
alert('Please Fill Address');
document.frm.txt_adds.focus();
return false;
}

// *************************************** Start code for email address **************************************************
		var emailID=document.getElementById("txt_email");
		      
		if((emailID.value==null)||(emailID.value=="")){
		
		alert("Please Enter your Email ID");
		document.getElementById("txt_email").focus();
		return false;
	}
	else if(echeck(emailID.value)==false){
		emailID.value="";
		document.getElementById("txt_email").focus();
		return false;
	}	
	// ************************************** End Code For email Address *************************************************		

}