//FUNCTION TO CHECK IF FIELD IS EMPTY
function isemp(field,message) {

if (field.value == "")

{

	alert("Please key in your "+message)
	
	field.focus();

    	return false;

}



return true;

}


//--------------------------------------------------------------------------------------------------------
//FUNCTION TO CHECK IF FIELD IS EMPTY FOR (ADMINISTRATIVE QUESTIONS)
function isempquestion(field,message) {

if (field.value == "")

{

	alert("Please tell us "+message)

	field.focus();

    	return false;

}



return true;

}


//--------------------------------------------------------------------------------------------------------
//FUNCTION TO CHECK IF EMAIL IS VALID
function isValidEmail(field) {



validRegExp = /^[^@]+@[^@]+.[a-z]{2,}$/i;



   // search email text for regular exp matches

    if (field.value.search(validRegExp) == -1)

   {

   	alert('Please key in a valid email address.');

      	field.focus();

      	return false;

	

   }



return true;

}


//--------------------------------------------------------------------------------------------------------
//VALIDATE SELECTBOX
function isselect(field,message) {



if (field.selectedIndex <= 0)

{

	alert("Please select your "+message)

	field.focus();

    	return false;

}



return true;

}


//--------------------------------------------------------------------------------------------------------
//VALIDATE CHECKBOX
function ischeck(field,message)
{
	
	valid=false
	for(i=0;i<field.length;i++)
	{
		if(field[i].checked)
		{
			valid=true;
		}
	}

	if(!valid)
	{
		alert("Please select  "+message);
		field[0].focus();

		return false;
	}
	else
	{return true;}

}


//--------------------------------------------------------------------------------------------------------
//VALIDATE RADIO BUTTON
function isradio(field,message)
{
	var chosenradio = false;
	for (counterA = 0; counterA < field.length; counterA++)
	{
 		if (field[counterA].checked)
		 chosenradio = true;
 	}
 	if (!chosenradio)
 	{
		alert ("Please choose your "+message);
		field[0].focus();
 		return false;
 	}
 	else
	{
	return true;
	}

}


//--------------------------------------------------------------------------------------------------------
//VALIDATE TEXTAREA
function validtextarea(field,message)
{
	if (field.value.length < 1)
	{
		alert("Please fill in your "+message)
		field.focus();
		return false;
		
	}

return true;

}



//--------------------------------------------------------------------------------------------------------
//FUNCTION THAT PERFORMS ALL FUNCTIONS, DEFINED IN THE ONSUBMIT EVENT HANDLER
function check(ask)

{
   
   if (isselect(document.ask.title,"Title."))
	{
	   if (isempquestion(document.ask.company,"Company Name."))
	   {
	        if (isempquestion(document.ask.contactPerson,"Contact Person."))
	        {
	        	if (isemp(document.ask.address,"Address."))
	           	{
	           		if (isemp(document.ask.contactNumber,"Contact Number."))
	           		{
	       				if (isValidEmail(document.ask.eMail))
	   					{
							if (validtextarea(document.ask.addMessage,"Message."))
		 		        	{
	                 			return true;
                        		
                   			}       
               			}        
         			}  
         		}
         	}
         }		
    }
   
     return false;
}