window.onload = setScreenClass; 
	window.onresize = setScreenClass;

	//  Following transition classes will be declared:
	//
	//	classname		  screenwidth
	//	------------------------------------------
	//	nopic		        < 1000px	
	//	homepic			>= 1000px			

	function setScreenClass(){
		var fwidth = document.documentElement.clientWidth;
		//var fheight = document.documentElement.clientHeight;
		//var cls = (fwidth<=1000)?'small_ad_btm':'wide_ad_btm';
		//alert(fheight);
		if(fwidth<=850)
		{
		document.getElementById('wide_ad_btm').style.display= 'none';
		document.getElementById('wide_ad_top').style.display= 'none';
		document.getElementById('small_ad_btm').style.display= 'block';
		document.getElementById('small_ad_top').style.display= 'inline';
        // other manipulations
        document.getElementById('banner').className='nopic';
        document.getElementById('wide_ad_mdl').style.display= 'none';
        document.getElementById('small_ad_mdl').style.display= 'block';

		}
		else 
		{
		document.getElementById('small_ad_btm').style.display= 'none';
		document.getElementById('small_ad_top').style.display= 'none';
		document.getElementById('wide_ad_btm').style.display= 'block';
		document.getElementById('wide_ad_top').style.display= 'inline';
		document.getElementById('banner').className='homepic';
		document.getElementById('small_ad_mdl').style.display= 'none';
		document.getElementById('wide_ad_mdl').style.display= 'block';

		}
	}