function valid(){
	if(trim(document.frmcontactus.clscontactus_firstname.value).length==0){
	alert("Please enter the first name !!")
	document.frmcontactus.clscontactus_firstname.focus();
	return false;
	}
	
	/*if(trim(document.frmcontactus.clscontactus_email.value).length==0){
	alert("Please enter your email !!")
	document.frmcontactus.clscontactus_email.focus();
	return false;
	}*/
	if(!ValidateEmail(document.frmcontactus.clscontactus_email)){
	return false;
	}
	if(trim(document.frmcontactus.clscontactus_subject.value).length==0){
	alert("Please enter subject !!")
	document.frmcontactus.clscontactus_subject.focus();
	return false;
	}
	
	if(trim(document.frmcontactus.clscontactus_message.value).length==0){
	alert("Please type message !!")
	document.frmcontactus.clscontactus_message.focus();
	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")
		   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 ValidateEmail(emailID){
	//var emailID=document.frmSample.txtEmail
	
	if ((emailID.value==null)||(emailID.value=="")){
		alert("Please Enter your Email ID")
		emailID.focus()
		return false
	}
	if (echeck(emailID.value)==false){
		emailID.value=""
		emailID.focus()
		return false
	}
	return true
 }






function trim(str, chars) {
    return ltrim(rtrim(str, chars), chars);
}

function ltrim(str, chars) {
    chars = chars || "\\s";
    return str.replace(new RegExp("^[" + chars + "]+", "g"), "");
}

function rtrim(str, chars) {
    chars = chars || "\\s";
    return str.replace(new RegExp("[" + chars + "]+$", "g"), "");
}