/**
 * @description [makes search button float with page scrolling]
 */

//floating image script
function JSFX_FloatTopLeft()
{
	var startX = 670, startY = 250;
	var ns = (navigator.appName.indexOf("Netscape") != -1);
	var d = document;
	var px = document.layers ? "" : "px";	
	var alertMessageElement = d.getElementById("maintenanceMsg");
	var alertMessageHeight = alertMessageElement?alertMessageElement.clientHeight:0;
	startY += alertMessageHeight;
	function ml(id)
	{
		var el=d.getElementById?d.getElementById(id):d.all?d.all[id]:d.layers[id];
		if(d.layers)
			el.style=el;
			el.sP=function(x,y)
				{this.style.left=x+px;this.style.top=y+px;};
			el.x = startX; el.y = startY;
		return el;
	}
	window.stayTopLeft=function()
	{
		var pY = ns ? pageYOffset : document.documentElement && document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop;
		ftlObj.y += (pY + startY - ftlObj.y)/8;
		ftlObj.sP(ftlObj.x, ftlObj.y);
		setTimeout("stayTopLeft()", 40);
	}
	
	//if PsycSCANS search button exists, use that instead
	if(document.getElementById("advsSearchButtonExtended")){			
		startY = 300;
		ftlObj = ml("advsSearchButtonExtended");
	}else{
		//use regular PsycNET search button		
		ftlObj = ml("advsSearchButton");
	}
							   
	stayTopLeft();
}
//end float script