function valids()
{   
	var fname= document.getElementById('first_name').value;
	var lname= document.getElementById('last_name').value;
	
	if(isNaN(fname)!= true)
	{
		alert('First Name Can Not Be Numaric.');
		return false
	}
	if(isNaN(lname)!= true)
	{
		alert('Last Name Can Not Be Numaric.');
		return false
	}
	
	return true;
}

function checkAlls()
{
	
			  document.getElementById('format1').checked=true;
			  document.getElementById('format2').checked=true;
			  document.getElementById('format3').checked=true;
			  document.getElementById('format4').checked=true;
			  document.getElementById('format5').checked=true;
			  
			  document.getElementById('cost1').style.display="block";
			  document.getElementById('cost2').style.display="block";
			  document.getElementById('cost3').style.display="block";
			  document.getElementById('cost4').style.display="block";
			  document.getElementById('cost5').style.display="block";
			  
			  document.getElementById('one').style.display="block"; 
			  document.getElementById('two').style.display="block"; 
			  document.getElementById('three').style.display="block"; 
			  document.getElementById('four').style.display="block"; 
			  document.getElementById('five').style.display="block"; 

			  document.getElementById('isbn1').style.display="block";
			  document.getElementById('isbn2').style.display="block";
			  document.getElementById('isbn3').style.display="block";
			  document.getElementById('isbn4').style.display="block";
			  document.getElementById('isbn5').style.display="block"; 

}
function checkAllsmultiple(a)
{
	
			  document.getElementById('format1'+a).checked=true;
			  document.getElementById('format2'+a).checked=true;
			  document.getElementById('format3'+a).checked=true;
			  document.getElementById('format4'+a).checked=true;
			  document.getElementById('format5'+a).checked=true;
			  
			  document.getElementById('cost1'+a).style.display="block";
			  document.getElementById('cost2'+a).style.display="block";
			  document.getElementById('cost3'+a).style.display="block";
			  document.getElementById('cost4'+a).style.display="block";
			  document.getElementById('cost5'+a).style.display="block";
			  
			  document.getElementById('one'+a).style.display="block"; 
			  document.getElementById('two'+a).style.display="block"; 
			  document.getElementById('three'+a).style.display="block"; 
			  document.getElementById('four'+a).style.display="block"; 
			  document.getElementById('five'+a).style.display="block"; 

			  document.getElementById('isbn1'+a).style.display="block";
			  document.getElementById('isbn2'+a).style.display="block";
			  document.getElementById('isbn3'+a).style.display="block";
			  document.getElementById('isbn4'+a).style.display="block";
			  document.getElementById('isbn5'+a).style.display="block";
}
function checking(a)
{
			  if(a=='format1')
			  {
				  if(document.getElementById(a).checked ==true)
				  {
					   document.getElementById('one').style.display="block"; 
					   document.getElementById('cost1').style.display="block";
					   document.getElementById('isbn1').style.display="block";
				  }
				  else
				  {
					  document.getElementById('one').style.display="none"; 
					  document.getElementById('cost1').style.display="none";
					  document.getElementById('cost1').value='';
					  document.getElementById('isbn1').style.display="none";
					  document.getElementById('isbn1_1').value='';
					  document.getElementById('isbn_2_1').value='';
					  document.getElementById('isbn_3_1').value='';
					  document.getElementById('isbn_4_1').value='';
					  document.getElementById('isbn_5_1').value='';

				  }
			  }
			  if(a=='format2')
			  {
				  if(document.getElementById(a).checked ==true)
				  {
					   document.getElementById('two').style.display="block"; 
					   document.getElementById('cost2').style.display="block";
					   document.getElementById('isbn2').style.display="block";
				  }
				  else
				  {
					  document.getElementById('two').style.display="none"; 
					  document.getElementById('cost2').style.display="none";
					  document.getElementById('cost2').value='';
					  document.getElementById('isbn2').style.display="none";
					  document.getElementById('isbn1_2').value='';
					  document.getElementById('isbn_2_2').value='';
					  document.getElementById('isbn_3_2').value='';
					  document.getElementById('isbn_4_2').value='';
					  document.getElementById('isbn_5_2').value='';

				  }
			  }
			  if(a=='format3')
			  {
				  if(document.getElementById(a).checked ==true)
				  {
					   document.getElementById('three').style.display="block"; 
					   document.getElementById('cost3').style.display="block";
					   document.getElementById('isbn3').style.display="block";
				  }
				  else
				  {
					  document.getElementById('three').style.display="none"; 
					  document.getElementById('cost3').style.display="none";
					  document.getElementById('cost3').value='';
					  document.getElementById('isbn3').style.display="none";
					  document.getElementById('isbn1_3').value='';
					  document.getElementById('isbn_2_3').value='';
					  document.getElementById('isbn_3_3').value='';
					  document.getElementById('isbn_4_3').value='';
					  document.getElementById('isbn_5_3').value='';

				  }
			  }
			   if(a=='format4')
			  {
				  if(document.getElementById(a).checked ==true)
				  {
					   document.getElementById('four').style.display="block"; 
					   document.getElementById('cost4').style.display="block";
					   document.getElementById('isbn4').style.display="block";
				  }
				  else
				  {
					  document.getElementById('four').style.display="none"; 
					  document.getElementById('cost4').style.display="none";
					  document.getElementById('cost4').value='';
					  document.getElementById('isbn4').style.display="none";
					  document.getElementById('isbn1_4').value='';
					  document.getElementById('isbn_2_4').value='';
					  document.getElementById('isbn_3_4').value='';
					  document.getElementById('isbn_4_4').value='';
					  document.getElementById('isbn_5_4').value='';

				  }
			  }
			   if(a=='format5')
			  {
				  if(document.getElementById(a).checked ==true)
				  {
					   document.getElementById('five').style.display="block"; 
					   document.getElementById('cost5').style.display="block";
					   document.getElementById('isbn5').style.display="block";
				  }
				  else
				  {
					  document.getElementById('five').style.display="none"; 
					  document.getElementById('cost5').style.display="none";
					  document.getElementById('cost5').value='';
					  document.getElementById('isbn5').style.display="none";
					  document.getElementById('isbn1_5').value='';
					  document.getElementById('isbn_2_5').value='';
					  document.getElementById('isbn_3_5').value='';
					  document.getElementById('isbn_4_5').value='';
					  document.getElementById('isbn_5_5').value='';

				  }
			  }
}
function checkingmultiple(a,b)
{
			  if(a=='format1'+b)
			  {
				  if(document.getElementById(a).checked ==true)
				  {
					   document.getElementById('one'+b).style.display="block"; 
					   document.getElementById('cost1'+b).style.display="block";
					   document.getElementById('isbn1'+b).style.display="block";
				  }
				  else
				  {
					  document.getElementById('one'+b).style.display="none"; 
					  document.getElementById('cost1'+b).style.display="none";
					  document.getElementById('cost1'+b).value='';
					  document.getElementById('isbn1'+b).style.display="none";
					  document.getElementById('isbn1_1'+b).value='';
					  document.getElementById('isbn_2_1'+b).value='';
					  document.getElementById('isbn_3_1'+b).value='';
					  document.getElementById('isbn_4_1'+b).value='';
					  document.getElementById('isbn_5_1'+b).value='';

				  }
			  }
			  if(a=='format2'+b)
			  {
				  if(document.getElementById(a).checked ==true)
				  {
					   document.getElementById('two'+b).style.display="block"; 
					   document.getElementById('cost2'+b).style.display="block";
					   document.getElementById('isbn2'+b).style.display="block";
				  }
				  else
				  {
					  document.getElementById('two'+b).style.display="none"; 
					  document.getElementById('cost2'+b).style.display="none";
					  document.getElementById('cost2'+b).value='';
					  document.getElementById('isbn2'+b).style.display="none";
					  document.getElementById('isbn1_2'+b).value='';
					  document.getElementById('isbn_2_2'+b).value='';
					  document.getElementById('isbn_3_2'+b).value='';
					  document.getElementById('isbn_4_2'+b).value='';
					  document.getElementById('isbn_5_2'+b).value='';

				  }
			  }
			  if(a=='format3'+b)
			  {
				  if(document.getElementById(a).checked ==true)
				  {
					   document.getElementById('three'+b).style.display="block"; 
					   document.getElementById('cost3'+b).style.display="block";
					   document.getElementById('isbn3'+b).style.display="block";
				  }
				  else
				  {
					  document.getElementById('three'+b).style.display="none"; 
					  document.getElementById('cost3'+b).style.display="none";
					  document.getElementById('cost3'+b).value='';
					  document.getElementById('isbn1'+b).style.display="none";
					  document.getElementById('isbn1_3'+b).value='';
					  document.getElementById('isbn_2_3'+b).value='';
					  document.getElementById('isbn_3_3'+b).value='';
					  document.getElementById('isbn_4_3'+b).value='';
					  document.getElementById('isbn_5_3'+b).value='';

				  }
			  }
			   if(a=='format4'+b)
			  {
				  if(document.getElementById(a).checked ==true)
				  {
					   document.getElementById('four'+b).style.display="block"; 
					   document.getElementById('cost4'+b).style.display="block";
					   document.getElementById('isbn4'+b).style.display="block";
				  }
				  else
				  {
					  document.getElementById('four'+b).style.display="none"; 
					  document.getElementById('cost4'+b).style.display="none";
					  document.getElementById('cost4'+b).value='';
					  document.getElementById('isbn4'+b).style.display="none";
					  document.getElementById('isbn1_4'+b).value='';
					  document.getElementById('isbn_2_4'+b).value='';
					  document.getElementById('isbn_3_4'+b).value='';
					  document.getElementById('isbn_4_4'+b).value='';
					  document.getElementById('isbn_5_4'+b).value='';

				  }
			  }
			   if(a=='format5'+b)
			  {
				  if(document.getElementById(a).checked ==true)
				  {
					   document.getElementById('five'+b).style.display="block"; 
					   document.getElementById('cost5'+b).style.display="block";
					   document.getElementById('isbn5'+b).style.display="block";
				  }
				  else
				  {
					  document.getElementById('five'+b).style.display="none"; 
					  document.getElementById('cost5'+b).style.display="none";
					  document.getElementById('cost5'+b).value='';
					  document.getElementById('isbn1'+b).style.display="none";
					  document.getElementById('isbn1_5'+b).value='';
					  document.getElementById('isbn_2_5'+b).value='';
					  document.getElementById('isbn_3_5'+b).value='';
					  document.getElementById('isbn_4_5'+b).value='';
					  document.getElementById('isbn_5_5'+b).value='';

				  }
			  }
}