function MattressClick(selection){
	var Mattress=new Array();

	if (selection=='size'){
		Mattress=['twin','full','queen','king','calking'];
	} else if(selection=='firmness') {
		Mattress=["firm","cushion_firm","plush","pillow_top","specialty"];
	} else if(selection=='type'){
		Mattress=["memory_foam","innerspring","hybrid","latex","foam"];
	} else if(selection=='brand'){
		Mattress=["sealy","temp","stearns_and_foster","drbreus","ibc","miralux","posturepedic"];
	} else if(selection=='price') {
		Mattress=["under500","between500and1000","between1000and2000","above2000"];
	}
	
	for (i = 0; i < Mattress.length; i++) {
document.getElementById(Mattress[i]).checked = true ;
	}
}