function validate(txtName,txtTitle,txtAddress1,txtCity,txtEmail,txtLastName,txtCompany,txtPhone) {
	
	var error=true;
	var errorMsg="";
        
    //validate txtName	  
	var trimmed = txtName.value.replace(/^\s+|\s+$/g, '') ;
    if (trimmed == "") {
        txtName.focus();
        errorMsg="Name field is empty.\n";
        error=false;
    }
        
    //validate txtTitle	  
	var trimmed = txtTitle.value.replace(/^\s+|\s+$/g, '') ;
    if (trimmed == "") {
        txtTitle.focus();
        errorMsg=errorMsg+"Title field is empty.\n";
        error=false;
    }
        
    //validate txtAddress1	  
	var trimmed = txtAddress1.value.replace(/^\s+|\s+$/g, '') ;
    if (trimmed == "") {
        txtAddress1.focus();
        errorMsg=errorMsg+"Address 1 field is empty.\n";
        error=false;
    }
     
    //validate txtCity	  
	var trimmed = txtCity.value.replace(/^\s+|\s+$/g, '') ;
    if (trimmed == "") {
        txtCity.focus();
        errorMsg=errorMsg+"City field is empty.\n";
        error=false;
    }
    
	//validate txtEmail
	var str = txtEmail.value; // email string
    
	var reg1 = /(@.*@)|(\.\.)|(@\.)|(\.@)|(^\.)/; // not valid
	var reg2 = /^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,3}|[0-9]{1,3})(\]?)$/; // valid
	if (!reg1.test(str) && reg2.test(str)) { // if syntax is valid
		
	}
	else{
        if(error==true){
           txtEmail.focus();
        }
	errorMsg=errorMsg+"Incorrect email address.\n";
	error= false;
	}
    
    //validate txtLastName	  
	var trimmed = txtLastName.value.replace(/^\s+|\s+$/g, '') ;
    if (trimmed == "") {
        txtLastName.focus();
        errorMsg=errorMsg+"Last Name field is empty.\n";
        error=false;
    }
    
    //validate txtCompany	  
	var trimmed = txtCompany.value.replace(/^\s+|\s+$/g, '') ;
    if (trimmed == "") {
        txtCompany.focus();
        errorMsg=errorMsg+"Company field is empty.\n";
        error=false;
    }
    
    //validate txtPhone	  
	var trimmed = txtPhone.value.replace(/^\s+|\s+$/g, '') ;
    if (trimmed == "") {
        txtPhone.focus();
        errorMsg=errorMsg+"Phone field is empty.\n";
        error=false;
    }
	
	if(error==false)
	{
	   alert(errorMsg);
	   return error;
	}
	else
	{
	  return error;
	}
}

function txtCheck(txt) {
    var trimmed = txt.value.replace(/^\s+|\s+$/g, '') ;
    if (trimmed == "") {
        alert("Please provide all required fields.");
        txt.focus();
        return false;
    }
    return true;
}