var s=30;
var maxheight=110;
var minheight=1;

function imgKeyClick(){
	var key = document.getElementById("imgKey").style.background;	
	var url = "url(images/sdjt.jpg)";
	
	if(key==url){		
		mybook_homePage_floatContent.style.pixelHeight-=s;
		if(mybook_homePage_floatContent.style.pixelHeight>minheight){
		setTimeout("imgKeyClick();",1);
		}else{
		document.getElementById("imgKey").style.background="url(images/sdjt2.jpg)";
	}
	}else{
		mybook_homePage_floatContent.style.pixelHeight+=s;
		if(mybook_homePage_floatContent.style.pixelHeight<maxheight){
		setTimeout("imgKeyClick();",1);
		}else{
		document.getElementById("imgKey").style.background="url(images/sdjt.jpg)";
		}
	}
}
//window.onload=imgKeyClick;