function checkvalid()
{
	var name_tea = Trim(document.frmupload.vName.value);
	if(name_tea.length < 1)
	{
		alert("Please Enter Name");
		document.frmupload.vName.value = "";
		document.frmupload.vName.focus();
		return false;
	}
	var email_tea = Trim(document.frmupload.vEmail.value);
	if(email_tea.length < 1)
	{
		alert("Please Enter Email");
		document.frmupload.vEmail.value = "";
		document.frmupload.vEmail.focus();
		return false;
	}
	if(!isValidEmail(document.frmupload.vEmail.value))
	{
		document.frmupload.vEmail.value = "";
		document.frmupload.vEmail.focus();
		return false;
	}
	var matname = Trim(document.frmupload.vMaterialName.value);
	if(matname.length < 1)
	{
		alert("Please Enter Video");
		document.frmupload.vMaterialName.value = "";
		document.frmupload.vMaterialName.focus();
		return false;
	}
	var desc = Trim(document.frmupload.tDescription.value);
	if(desc.length < 1)
	{
		alert("Please Enter Description");
		document.frmupload.tDescription.value = "";
		document.frmupload.tDescription.focus();
		return false;
	}
	var matsrc = Trim(document.getElementById('vMaterialSource').value);
	if(matsrc == '' && Trim(document.getElementById('vOldMaterialSource').value) == '')
	{
		alert("Please Upload Video File");
		document.frmupload.vMaterialSource.focus();
		return false;
	}
	if(document.getElementById('vMaterialSource').value != '' || document.getElementById('vOldMaterialSource').value !='')
	{
		return checkFile();
	}
	//	document.frmupload.mode.value = 'Add';
}
function checkFile()
{
	var i,l,str,get_size_old,get_size;	
	var a=document.getElementById('vMaterialSource').value;
	var b=document.getElementById('vOldMaterialSource').value;
	if(a != '')
	{
  		i=a.indexOf(".");
  		l=a.length;
		i=i+1;
  		l=l-1;
  		str=a.substr(i,l);
	}
	else
	{
		i=b.indexOf(".");
  		l=b.length;
		i=i+1;
  		l=l-1;
  		str=b.substr(i,l);
	}
	if(str !="avi" && str !="asf" && str != "wmv" && str !="mov" && str !="3gp" && str != "mpeg" && str !="mp4" && str != "mpg" && str !="m4v" && str != "flv" )
	{
   		alert("Please Upload a valid Video file !");
		document.getElementById('vMaterialSource').value = '';
    	return false;
 	}
	else
	{
		document.frmupload.mode.value = 'Add';
		return true;
	}
}