Validation for gif,pdf,bmb,jpeg,doc

Validation for gif,pdf,bmb,jpeg,doc

<br /> <script type="text/javascript">
<br />//<![CDATA[
<br />
<br />function validate()
<br />{
<br />
<br />  var title=document.form1.title.value;
<br />  if(title==""){   
<br />  alert("Please enter the Title of the Book !");document.form1.title.focus();return false;  
<br />  } 
<br />  
<br />  
<br />var pdf =document.form1.pdf.value;
<br /> 
<br />
<br />if(pdf != "" )
<br />	{
<br />	  if (valupfile(pdf,"Only Upload PDF file!") == false)
<br />	  {
<br />		   document.form1.pdf.select();
<br />		   return false;
<br />	  }
<br />	}
<br />
<br />
<br />
<br />var image =document.form1.image.value;
<br /> 
<br />
<br />
<br />if(image != "" )
<br />	{
<br />	  if (valupfile1(image,"Only Upload .jpg,.gif,.png image file!") == false)
<br />	  {
<br />		   document.form1.image.select();
<br />		   return false;
<br />	  }
<br />	}
<br />
<br />
<br />
<br />return true;
<br />}
<br />
<br />
<br />function valupfile(field,alerttxt)
<br />{
<br />  with (field)
<br />  {
<br />   var dotpdf = field.lastIndexOf(".pdf")
<br />   if(dotpdf >= 0)
<br />   return true; 
<br />   else  		
<br />    {
<br />	  alert(alerttxt)
<br />	  return false;
<br />    }  
<br />  }
<br />} 
<br />
<br />
<br />function valupfile1(field,alerttxt)
<br />{
<br />  with (field)
<br />  {
<br />   var dotjpg = field.lastIndexOf(".jpg")
<br />   var dotgif = field.lastIndexOf(".gif")
<br />   var dotpng = field.lastIndexOf(".png")
<br />  
<br />   if(dotjpg >= 0)
<br />   return true; 
<br />   else if(dotgif >= 0)
<br />    return true;
<br />   else if(dotpng >= 0)
<br />    return true;
<br />   else  		
<br />    {
<br />	  alert(alerttxt)
<br />	  return false;
<br />    }  
<br />  }
<br />} 
<br />
<br /> //]]>
<br />
<br /></script>
<br />