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 ltrim(str) { 
	for(var k = 0; k < str.length && isWhitespace(str.charAt(k)); k++);
	return str.substring(k, str.length);
}
function rtrim(str) {
	for(var j=str.length-1; j>=0 && isWhitespace(str.charAt(j)) ; j--) ;
	return str.substring(0,j+1);
}
function trim(str) {
	return ltrim(rtrim(str));
}
function isWhitespace(charToCheck) {
	var whitespaceChars = " \t\n\r\f";
	return (whitespaceChars.indexOf(charToCheck) != -1);
}
function  check_form(){	
	var message = "";	
		if  (!trim(document.adminform.name.value)){
			message += "Please Enter your Name.\n";
			}
			
		if  (!trim(document.adminform.address.value)){
			message += "Please Enter your Address.\n";
			}	
			
		if  (!trim(document.adminform.tel.value)){
			message += "Please Enter your Telephone No .\n";
			}	
			
			
		
	if  (!trim(document.adminform.email.value) || !echeck(document.adminform.email.value)){
			message += "Please Enter Email.\n";
			}
			
	if  (!trim(document.adminform.requirement.value)){
			message += "Please Enter your Requirement .\n";
			}			
						
	if (message){
		alert("Please complete the following missing items:\n\n" + message);
		return false;
		}
	return true;
}