var sb = document.getElementById("springBoom");
sb.style.position = "absolute";
sb.style.top = "0px";
resizeWin();
window.onresize = resizeWin;

function getSize(){
    		var width,height;
      		if(self.innerHeight){
      			width=self.innerWidth;
       			height=self.innerHeight;
     		 }else{
       			if(document.documentElement && document.documentElement.clientHeight){
        		width=document.documentElement.clientWidth;
        		height=document.documentElement.clientHeight;
       			}else{
         			if(document.body){
          				width=document.body.clientWidth;
          				height=document.body.clientHeight;
         			}
        		}
       		}
       		return {width:width, height:height};
}

function resizeWin(){
	//var _width = getSize().width;
	//var _width = document.body.clientWidth;
	//var _width = document.body.offsetWidth;
	var _width = document.body.scrollWidth;
	//var _width = document.documentElement.clientWidth;
	//var _width = document.documentElement.offsetWidth;
	sb.style.pixelLeft = _width*.5;
}