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	 JQUERY > ajax() - $(document) , $(window) 

	¸¶¿ì½º ½ºÅ©·ÑÀ» ³¡±îÁö ³»¸®¸é ½ºÅ©·ÑÀ» °¨Áö Çϰųª (´õº¸±â ±â´É)
	
	¸¶¿ì½º ½ºÅ©·ÑÀ» ³»¸®´Ù°¡ ¹è³Ê°¡ ¸ØÃá´Ù°Å³ª...

	"¹®Á¦´Â »ç¿ëÀÚ°¡ ½ºÅ©·ÑÀ» ¾Æ·¡±îÁö ³»·ÈÀ» ¶§"  À̺¥Æ®¸¦ ijġÇÏ´Â °Í

	¿©±â¿¡¼­ ¸¶¿ì½º ºê¶ó¿ìÀú âÀÇ ½ºÅ©·Ñ ³¡À» ¾Ë¾Æ³¾¶§.. 

	Çϳª ±Ã±ÝÇÑÁ¡ÀÌ ÀÖ¾ú´Ù.

	$(window) vs $(document) ÀÇ Â÷ÀÌ..
	
	(Å×½ºÆ®1)

	//width°íÁ¤ height 100%
	html { width: 1000px; height:100%; }  

	console.log($(window).width()); //364
	console.log($(document).width()); //1000

	console.log($(window).height()); //441
	console.log($(document).height()); //441

	À©µµ¿ì¿Í µµÅ¥¸ÕÆ®´Â °è¼Ó °°¾ÆÁø´Ù.

	(Å×½ºÆ®2) 
	
	//width °íÁ¤, height °íÁ¤
	html { width: 1000px; height:1000px; }

	console.log($(window).width()); //364
	console.log($(document).width()); //1000
	console.log($(window).height()); //441
	console.log($(document).height()); //1000

	À©µµ¿ì¿Í µµÅ¥¸ÕÆ®´Â css¿¡ µû¶ó °íÁ¤ÀÌ µÈ´Ù.

	À§¿Í°°ÀÌ º¸¸é css¿¡¼­ height¸¦ pxÀÌ³Ä %ÀÌ³Ä µû¶ó ´Þ¶óÁø´Ù.

	var scroll = $(window).scrollTop(); //½ºÅ©·ÑÀÇ ÇöÀç À§Ä¡
	var docHeight = $(document).height() //µµÅ¥¸ÕÆ® ³ôÀÌ·Î °íÁ¤
	var winHeight = $(window).height() //À©µµ¿ìâ ³ôÀÌ °¡º¯

	console.log(scroll) //1743
	console.log(docHeight) //2455
	console.log(winHeight)//2546

	document = ¹®¼­ ±âÁØ..¹®¼­´Â ÄÚµù¿¡µû¶ó¼­ ´Þ¶óÁö¹Ç·Î °è¼Ó °íÁ¤
	window = ºê¶ó¿ìÀúâ ±âÁØ ÀΰŠ°°À½ - â»çÀÌÁî°¡ °è¼Ó ´Þ¶óÁü.

	â»çÀÌÁî°¡ ÁÙ¾îµé¼ö·Ï window°ªÀº ´Þ¶óÁü.

	°á·ÐÀº...

	½ºÅ©·ÑÀÇ ¸Ç¸¶Áö¸· top°ªÀ» ¾Ë·Á¸é. 

	¹®¼­³ôÀÌ - ºê¶ó¿ìÀúâ³ôÀÌ  = ½ºÅ©·Ñ ½ºÅ©·Ñ â ³¡

	$(window).scrollTop() == $(document).height() - $(window).height()

	Æ®À§ÅÍ µî°ú °°Àº ÀÚµ¿ ´õ º¸±â ±â´ÉÀ» ±¸Çö ÇÒ·Á¸é ¾Æ·¡Ã³·³ ÇÏ¸é µÇ°Ú´Ù....
	
	$(document).ready(function() {
		$(window).scroll(function() { 
			if ($(window).scrollTop() == $(document).height() - $(window).height())
			{ 
				lastPostFunc(); 
			} 
		}); 
	});

	function lastPostFunc() 
	{ 
		$('div#lastPostsLoader').html('¸¶Áö¸· ÀÔ´Ï´Ù.............'); 
	};