function check()
{
 var x	= 	document.frm;
 if(x.name.value=='')
 {
    alert("Please Enter Name");
	x.name.focus();
	return false;
 }
  if(x.mobile.value=='')
 {
    alert("Please Enter Mobile No.");
	x.mobile.focus();
	return false;
 }
 else
if(ValidateForm(document.frm.mobile) == false )
return false;
if(ValidateForm(document.frm.office) == false )
return false;
if(ValidateForm(document.frm.office) == false )
return false;
  if(x.branch.value=='')
 {
    alert("Please Enter Branch visited");
	x.branch.focus();
	return false;
 }
 if(x.email.value=='')
 {
    alert("Please Enter Email");
	x.email.focus();
	return false;
 }
 if(x.email.value!='')
 {
   var em = echeck(x.email.value);
   if(!em)
 	return false;
 }
 }
 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")
		   document.frm.email.focus();
		   return false
		}

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

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

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

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

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