// Browser Window Size and Position
// copyright Stephen Chapman, 3rd Jan 2005, 8th Dec 2005
// you may copy these functions but please keep the copyright notice as well
function pageWidth() {
	return window.innerWidth != null?  window.innerWidth : document.documentElement && document.documentElement.clientWidth ? document.documentElement.clientWidth : document.body != null ? document.body.clientWidth : null;
}
function pageHeight() {
	return  window.innerHeight != null? window.innerHeight : document.documentElement && document.documentElement.clientHeight ?  document.documentElement.clientHeight : document.body != null? document.body.clientHeight : null;} function posLeft() {return typeof window.pageXOffset != 'undefined' ? window.pageXOffset :document.documentElement && document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft ? document.body.scrollLeft : 0;
}
function posTop() {
	return typeof window.pageYOffset != 'undefined' ?  window.pageYOffset : document.documentElement && document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop ? document.body.scrollTop : 0;
}
function posRight() {
	return posLeft()+pageWidth();
}
function posBottom() {
	return posTop()+pageHeight();
}
                    
window.onload = function(){getBackgroundImage();}
window.onresize = function(){
	getBackgroundImage();
}
function getBackgroundImage(){
	var imgsrc="";
	
	if(pageWidth()>=1100) {
		document.body.style.backgroundRepeat = 'no-repeat';
		if(pageHeight()<600){
			imgsrc="themes/sttees4/images/bg1200x600.jpg";
		}
		else if(pageHeight()>=600 && pageHeight()<=700) {
			imgsrc="themes/sttees4/images/bg1400x700.jpg";
		}
		else if(pageHeight()>=700 && pageHeight()<=825) {
			imgsrc="themes/sttees4/images/bg1650x825.jpg";
		}
		else if(pageHeight()>=825 && pageHeight()<=950) {
			imgsrc="themes/sttees4/images/bg1900x950.jpg";
		}
		else if(pageHeight()>=950 && pageHeight()<=1100) {
			imgsrc="themes/sttees4/images/bg2200x1100.jpg";
		}
		else if(pageHeight()>=1100 && pageHeight()<=1300) {
			imgsrc="themes/sttees4/images/bg2600x1300.jpg";
		}
		else if(pageHeight()>=1300 && pageHeight()<=1500) {
			imgsrc="themes/sttees4/images/bg3000x1500.jpg";
		}
		else if(pageHeight()>=1500 && pageHeight()<=1750) {
			imgsrc="themes/sttees4/images/bg3500x1750.jpg";
		}
		else if(pageHeight()>=1750 && pageHeight()<=2050) {
			imgsrc="themes/sttees4/images/bg4100x2050.jpg";
		}
		else {
			imgsrc="themes/sttees4/images/bg4800x2400.jpg";
		}
	}
	else {
		document.body.style.backgroundRepeat = 'repeat-x';
		imgsrc="themes/sttees4/images/blank.gif";
	}
	document.body.style.backgroundImage = 'url('+imgsrc+')';
}