function trim(str)
{
	return str.replace(/^\s*|\s*$/g,"");
}
function validate_email(email) 
{
	var rxp =/^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})$/;
	if(rxp.test(email)!=true) 
	{
		return false;
	} 
	else 
	{
		return true;
	}
}
function filechecker(path){
	var ext = new Array()
	ext[0] = "jpg"
	ext[1] = "jpeg"
	ext[2] = "gif"
	ext[3] = "pjpg"
	ext[4] = "pjpeg"
	ext[5] = "png"
	ext[6] = "JPG"
	ext[7] = "JPEG"
	ext[8] = "GIF"
	ext[9] = "PJPG"
	ext[10] = "PJPEG"
	ext[11] = "PNG"
	ext[12] = "BMP"
	ext[13] = "bmp"
	var flag=0;
	for(var i=0;i<14;i++)
	{
		if(path.lastIndexOf(ext[i])!=-1 ) {
			flag=1;
			break;
		}	  
	}
	return flag;
}
function validation()
{
	if(trim(document.contact.name.value)=="")
	{
		alert("Please enter your name.");
		document.contact.name.focus();
		return false;
	}
	if(trim(document.contact.email.value)=="")
	{
		alert("Please enter your email address.");
		document.contact.email.focus();
		return false;
	}
	if(validate_email(document.contact.email.value)=="")
	{
		alert("Please enter valid email address.");
		document.contact.email.focus();
		return false;
	}		
//	if(isNaN(document.contact.telhome.value))
//	{
//		alert("Please enter valid telephone number.");
//		document.contact.telhome.focus();
//		return false;
//	}	
//	if(isNaN(document.contact.mobile.value))
//	{
//		alert("Please enter valid mobile number.");
//		document.contact.mobile.focus();
//		return false;
//	}
	if(trim(document.contact.story.value)=="")
	{
		alert("Please enter your story.");
		document.contact.story.focus();
		return false;
	}		
	if(trim(document.contact.file.value)!="")
	{
		if(filechecker(document.contact.file.value)==0)
		{
			alert("Please upload a valid image.");
			document.contact.file.focus();
			return false;
		}
	}	
	if(trim(document.contact.file2.value)!="")
	{
		if(filechecker(document.contact.file2.value)==0)
		{
			alert("Please upload a valid image.");
			document.contact.file2.focus();
			return false;
		}
	}
	if(trim(document.contact.security_code1.value)=="")
	{
		alert("Please enter security code.");
		document.contact.security_code1.focus();
		return false;
	}
}