// JavaScript Document

function validate() {
   var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
   
   var emailko = document.frmfeedback.txtemail.value; 
   var nameko = document.frmfeedback.txtname.value;  
   var contactno = document.frmfeedback.txtcn.value; 
   var feedback = document.frmfeedback.txtfb.value;   
   
   if(nameko == "") {
      alert('Name is empty');
      return false;
   }
   else if(reg.test(emailko) == false) {
      alert('Invalid Email Address');
      return false;
   }
   else if(contactno == "") {
     alert('Contact Number is empty');
     return false;
   }   
   else
   {
	   alert("Thank your for the feedback");
	   return true;
	   }
}







function displaynav(getcode)
{	
	var sm_id = document.getElementById("sm_id");
	var mp_id = document.getElementById("mp_id");
	var mf_id = document.getElementById("mf_id");
	
	if(getcode == 'smnav') {
		sm_id.style.display = 'block';
		mp_id.style.display = 'none';
		mf_id.style.display = 'none';
	}
	else if(getcode == 'mpnav') {
		sm_id.style.display = 'none';
		mp_id.style.display = 'block';
		mf_id.style.display = 'none';
	}	
	else if(getcode == 'mfnav') {
		sm_id.style.display = 'none';
		mp_id.style.display = 'none';
		mf_id.style.display = 'block';
	}
}



function querySt(getid) 
{
	geturl = window.location.search.substring(1);
	gy = geturl.split("&");
	for (i=0;i<gy.length;i++) 
	{
		ft = gy[i].split("=");
		if (ft[0] == getid) 
		{
			return ft[1];
		}
	}
}


function displaynavcourses(getc)
{	
	var oral_id = document.getElementById("oral_id");
	var written_id = document.getElementById("written_id");
	var reading_id = document.getElementById("reading_id");
	
	//alert(getc = querySt("sb"));

	var getc = querySt("sb");
	
	if(getc != null)
	{	
		if(getc == 'oral') {
		oral_id.style.display = 'block';
		written_id.style.display = 'none';
		reading_id.style.display = 'none';
		}
		else if(getc == 'written') {
			oral_id.style.display = 'none';
			written_id.style.display = 'block';
			reading_id.style.display = 'none';
		}	
		else if(getc == 'reading') {
			oral_id.style.display = 'none';
			written_id.style.display = 'none';
			reading_id.style.display = 'block';
		}
	}
}

function dcourses(getcourses)
{	
	var oral_id = document.getElementById("oral_id");
	var written_id = document.getElementById("written_id");
	var reading_id = document.getElementById("reading_id");
	
	
	if(getcourses == 'oral') {
		oral_id.style.display = 'block';
		written_id.style.display = 'none';
		reading_id.style.display = 'none';
	}
	else if(getcourses == 'written') {
		oral_id.style.display = 'none';
		written_id.style.display = 'block';
		reading_id.style.display = 'none';
	}	
	else if(getcourses == 'reading') {
		oral_id.style.display = 'none';
		written_id.style.display = 'none';
		reading_id.style.display = 'block';
	}
	
}

//validating form


//end of file